diff --git a/prism.css b/prism.css
new file mode 100644
index 0000000..910d70c
--- /dev/null
+++ b/prism.css
@@ -0,0 +1,141 @@
+/* PrismJS 1.15.0
+https://prismjs.com/download.html#themes=prism&languages=clike+java+scala */
+/**
+ * prism.js default theme for JavaScript, CSS and HTML
+ * Based on dabblet (http://dabblet.com)
+ * @author Lea Verou
+ */
+
+code[class*="language-"],
+pre[class*="language-"] {
+	color: black;
+	background: none;
+	text-shadow: 0 1px white;
+	font-family: Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace;
+	text-align: left;
+	white-space: pre;
+	word-spacing: normal;
+	word-break: normal;
+	word-wrap: normal;
+	line-height: 1.5;
+
+	-moz-tab-size: 4;
+	-o-tab-size: 4;
+	tab-size: 4;
+
+	-webkit-hyphens: none;
+	-moz-hyphens: none;
+	-ms-hyphens: none;
+	hyphens: none;
+}
+
+pre[class*="language-"]::-moz-selection, pre[class*="language-"] ::-moz-selection,
+code[class*="language-"]::-moz-selection, code[class*="language-"] ::-moz-selection {
+	text-shadow: none;
+	background: #b3d4fc;
+}
+
+pre[class*="language-"]::selection, pre[class*="language-"] ::selection,
+code[class*="language-"]::selection, code[class*="language-"] ::selection {
+	text-shadow: none;
+	background: #b3d4fc;
+}
+
+@media print {
+	code[class*="language-"],
+	pre[class*="language-"] {
+		text-shadow: none;
+	}
+}
+
+/* Code blocks */
+pre[class*="language-"] {
+	padding: 1em;
+	margin: .5em 0;
+	overflow: auto;
+}
+
+:not(pre) > code[class*="language-"],
+pre[class*="language-"] {
+	background: #f5f2f0;
+}
+
+/* Inline code */
+:not(pre) > code[class*="language-"] {
+	padding: .1em;
+	border-radius: .3em;
+	white-space: normal;
+}
+
+.token.comment,
+.token.prolog,
+.token.doctype,
+.token.cdata {
+	color: slategray;
+}
+
+.token.punctuation {
+	color: #999;
+}
+
+.namespace {
+	opacity: .7;
+}
+
+.token.property,
+.token.tag,
+.token.boolean,
+.token.number,
+.token.constant,
+.token.symbol,
+.token.deleted {
+	color: #905;
+}
+
+.token.selector,
+.token.attr-name,
+.token.string,
+.token.char,
+.token.builtin,
+.token.inserted {
+	color: #690;
+}
+
+.token.operator,
+.token.entity,
+.token.url,
+.language-css .token.string,
+.style .token.string {
+	color: #9a6e3a;
+	background: hsla(0, 0%, 100%, .5);
+}
+
+.token.atrule,
+.token.attr-value,
+.token.keyword {
+	color: #07a;
+}
+
+.token.function,
+.token.class-name {
+	color: #DD4A68;
+}
+
+.token.regex,
+.token.important,
+.token.variable {
+	color: #e90;
+}
+
+.token.important,
+.token.bold {
+	font-weight: bold;
+}
+.token.italic {
+	font-style: italic;
+}
+
+.token.entity {
+	cursor: help;
+}
+
diff --git a/prism.js b/prism.js
new file mode 100644
index 0000000..7401856
--- /dev/null
+++ b/prism.js
@@ -0,0 +1,6 @@
+/* PrismJS 1.15.0
+https://prismjs.com/download.html#themes=prism&languages=clike+java+scala */
+var _self="undefined"!=typeof window?window:"undefined"!=typeof WorkerGlobalScope&&self instanceof WorkerGlobalScope?self:{},Prism=function(){var e=/\blang(?:uage)?-([\w-]+)\b/i,t=0,n=_self.Prism={manual:_self.Prism&&_self.Prism.manual,disableWorkerMessageHandler:_self.Prism&&_self.Prism.disableWorkerMessageHandler,util:{encode:function(e){return e instanceof a?new a(e.type,n.util.encode(e.content),e.alias):"Array"===n.util.type(e)?e.map(n.util.encode):e.replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/\u00a0/g," ")},type:function(e){return Object.prototype.toString.call(e).slice(8,-1)},objId:function(e){return e.__id||Object.defineProperty(e,"__id",{value:++t}),e.__id},clone:function(e,t){var a=n.util.type(e);switch(t=t||{},a){case"Object":if(t[n.util.objId(e)])return t[n.util.objId(e)];var r={};t[n.util.objId(e)]=r;for(var l in e)e.hasOwnProperty(l)&&(r[l]=n.util.clone(e[l],t));return r;case"Array":if(t[n.util.objId(e)])return t[n.util.objId(e)];var r=[];return t[n.util.objId(e)]=r,e.forEach(function(e,a){r[a]=n.util.clone(e,t)}),r}return e}},languages:{extend:function(e,t){var a=n.util.clone(n.languages[e]);for(var r in t)a[r]=t[r];return a},insertBefore:function(e,t,a,r){r=r||n.languages;var l=r[e],i={};for(var o in l)if(l.hasOwnProperty(o)){if(o==t)for(var s in a)a.hasOwnProperty(s)&&(i[s]=a[s]);a.hasOwnProperty(o)||(i[o]=l[o])}var u=r[e];return r[e]=i,n.languages.DFS(n.languages,function(t,n){n===u&&t!=e&&(this[t]=i)}),i},DFS:function(e,t,a,r){r=r||{};for(var l in e)e.hasOwnProperty(l)&&(t.call(e,l,e[l],a||l),"Object"!==n.util.type(e[l])||r[n.util.objId(e[l])]?"Array"!==n.util.type(e[l])||r[n.util.objId(e[l])]||(r[n.util.objId(e[l])]=!0,n.languages.DFS(e[l],t,l,r)):(r[n.util.objId(e[l])]=!0,n.languages.DFS(e[l],t,null,r)))}},plugins:{},highlightAll:function(e,t){n.highlightAllUnder(document,e,t)},highlightAllUnder:function(e,t,a){var r={callback:a,selector:'code[class*="language-"], [class*="language-"] code, code[class*="lang-"], [class*="lang-"] code'};n.hooks.run("before-highlightall",r);for(var l,i=r.elements||e.querySelectorAll(r.selector),o=0;l=i[o++];)n.highlightElement(l,t===!0,r.callback)},highlightElement:function(t,a,r){for(var l,i,o=t;o&&!e.test(o.className);)o=o.parentNode;o&&(l=(o.className.match(e)||[,""])[1].toLowerCase(),i=n.languages[l]),t.className=t.className.replace(e,"").replace(/\s+/g," ")+" language-"+l,t.parentNode&&(o=t.parentNode,/pre/i.test(o.nodeName)&&(o.className=o.className.replace(e,"").replace(/\s+/g," ")+" language-"+l));var s=t.textContent,u={element:t,language:l,grammar:i,code:s};if(n.hooks.run("before-sanity-check",u),!u.code||!u.grammar)return u.code&&(n.hooks.run("before-highlight",u),u.element.textContent=u.code,n.hooks.run("after-highlight",u)),n.hooks.run("complete",u),void 0;if(n.hooks.run("before-highlight",u),a&&_self.Worker){var g=new Worker(n.filename);g.onmessage=function(e){u.highlightedCode=e.data,n.hooks.run("before-insert",u),u.element.innerHTML=u.highlightedCode,n.hooks.run("after-highlight",u),n.hooks.run("complete",u),r&&r.call(u.element)},g.postMessage(JSON.stringify({language:u.language,code:u.code,immediateClose:!0}))}else u.highlightedCode=n.highlight(u.code,u.grammar,u.language),n.hooks.run("before-insert",u),u.element.innerHTML=u.highlightedCode,n.hooks.run("after-highlight",u),n.hooks.run("complete",u),r&&r.call(t)},highlight:function(e,t,r){var l={code:e,grammar:t,language:r};return n.hooks.run("before-tokenize",l),l.tokens=n.tokenize(l.code,l.grammar),n.hooks.run("after-tokenize",l),a.stringify(n.util.encode(l.tokens),l.language)},matchGrammar:function(e,t,a,r,l,i,o){var s=n.Token;for(var u in a)if(a.hasOwnProperty(u)&&a[u]){if(u==o)return;var g=a[u];g="Array"===n.util.type(g)?g:[g];for(var c=0;c<g.length;++c){var h=g[c],f=h.inside,d=!!h.lookbehind,m=!!h.greedy,p=0,y=h.alias;if(m&&!h.pattern.global){var v=h.pattern.toString().match(/[imuy]*$/)[0];h.pattern=RegExp(h.pattern.source,v+"g")}h=h.pattern||h;for(var b=r,k=l;b<t.length;k+=t[b].length,++b){var w=t[b];if(t.length>e.length)return;if(!(w instanceof s)){if(m&&b!=t.length-1){h.lastIndex=k;var _=h.exec(e);if(!_)break;for(var j=_.index+(d?_[1].length:0),P=_.index+_[0].length,A=b,x=k,O=t.length;O>A&&(P>x||!t[A].type&&!t[A-1].greedy);++A)x+=t[A].length,j>=x&&(++b,k=x);if(t[b]instanceof s)continue;I=A-b,w=e.slice(k,x),_.index-=k}else{h.lastIndex=0;var _=h.exec(w),I=1}if(_){d&&(p=_[1]?_[1].length:0);var j=_.index+p,_=_[0].slice(p),P=j+_.length,N=w.slice(0,j),S=w.slice(P),C=[b,I];N&&(++b,k+=N.length,C.push(N));var E=new s(u,f?n.tokenize(_,f):_,y,_,m);if(C.push(E),S&&C.push(S),Array.prototype.splice.apply(t,C),1!=I&&n.matchGrammar(e,t,a,b,k,!0,u),i)break}else if(i)break}}}}},tokenize:function(e,t){var a=[e],r=t.rest;if(r){for(var l in r)t[l]=r[l];delete t.rest}return n.matchGrammar(e,a,t,0,0,!1),a},hooks:{all:{},add:function(e,t){var a=n.hooks.all;a[e]=a[e]||[],a[e].push(t)},run:function(e,t){var a=n.hooks.all[e];if(a&&a.length)for(var r,l=0;r=a[l++];)r(t)}}},a=n.Token=function(e,t,n,a,r){this.type=e,this.content=t,this.alias=n,this.length=0|(a||"").length,this.greedy=!!r};if(a.stringify=function(e,t,r){if("string"==typeof e)return e;if("Array"===n.util.type(e))return e.map(function(n){return a.stringify(n,t,e)}).join("");var l={type:e.type,content:a.stringify(e.content,t,r),tag:"span",classes:["token",e.type],attributes:{},language:t,parent:r};if(e.alias){var i="Array"===n.util.type(e.alias)?e.alias:[e.alias];Array.prototype.push.apply(l.classes,i)}n.hooks.run("wrap",l);var o=Object.keys(l.attributes).map(function(e){return e+'="'+(l.attributes[e]||"").replace(/"/g,"&quot;")+'"'}).join(" ");return"<"+l.tag+' class="'+l.classes.join(" ")+'"'+(o?" "+o:"")+">"+l.content+"</"+l.tag+">"},!_self.document)return _self.addEventListener?(n.disableWorkerMessageHandler||_self.addEventListener("message",function(e){var t=JSON.parse(e.data),a=t.language,r=t.code,l=t.immediateClose;_self.postMessage(n.highlight(r,n.languages[a],a)),l&&_self.close()},!1),_self.Prism):_self.Prism;var r=document.currentScript||[].slice.call(document.getElementsByTagName("script")).pop();return r&&(n.filename=r.src,n.manual||r.hasAttribute("data-manual")||("loading"!==document.readyState?window.requestAnimationFrame?window.requestAnimationFrame(n.highlightAll):window.setTimeout(n.highlightAll,16):document.addEventListener("DOMContentLoaded",n.highlightAll))),_self.Prism}();"undefined"!=typeof module&&module.exports&&(module.exports=Prism),"undefined"!=typeof global&&(global.Prism=Prism);
+Prism.languages.clike={comment:[{pattern:/(^|[^\\])\/\*[\s\S]*?(?:\*\/|$)/,lookbehind:!0},{pattern:/(^|[^\\:])\/\/.*/,lookbehind:!0,greedy:!0}],string:{pattern:/(["'])(?:\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1/,greedy:!0},"class-name":{pattern:/((?:\b(?:class|interface|extends|implements|trait|instanceof|new)\s+)|(?:catch\s+\())[\w.\\]+/i,lookbehind:!0,inside:{punctuation:/[.\\]/}},keyword:/\b(?:if|else|while|do|for|return|in|instanceof|function|new|try|throw|catch|finally|null|break|continue)\b/,"boolean":/\b(?:true|false)\b/,"function":/\w+(?=\()/,number:/\b0x[\da-f]+\b|(?:\b\d+\.?\d*|\B\.\d+)(?:e[+-]?\d+)?/i,operator:/--?|\+\+?|!=?=?|<=?|>=?|==?=?|&&?|\|\|?|\?|\*|\/|~|\^|%/,punctuation:/[{}[\];(),.:]/};
+!function(a){var e=/\b(?:abstract|continue|for|new|switch|assert|default|goto|package|synchronized|boolean|do|if|private|this|break|double|implements|protected|throw|byte|else|import|public|throws|case|enum|instanceof|return|transient|catch|extends|int|short|try|char|final|interface|static|void|class|finally|long|strictfp|volatile|const|float|native|super|while|var|null|exports|module|open|opens|provides|requires|to|transitive|uses|with)\b/,t=/\b[A-Z](?:\w*[a-z]\w*)?\b/;a.languages.java=a.languages.extend("clike",{"class-name":[t,/\b[A-Z]\w*(?=\s+\w+\s*[;,=())])/],keyword:e,"function":[a.languages.clike.function,{pattern:/(\:\:)[a-z_]\w*/,lookbehind:!0}],number:/\b0b[01][01_]*L?\b|\b0x[\da-f_]*\.?[\da-f_p+-]+\b|(?:\b\d[\d_]*\.?[\d_]*|\B\.\d[\d_]*)(?:e[+-]?\d[\d_]*)?[dfl]?/i,operator:{pattern:/(^|[^.])(?:<<=?|>>>?=?|->|([-+&|])\2|[?:~]|[-+*\/%&|^!=<>]=?)/m,lookbehind:!0}}),a.languages.insertBefore("java","class-name",{annotation:{alias:"punctuation",pattern:/(^|[^.])@\w+/,lookbehind:!0},namespace:{pattern:/(\b(?:exports|import(?:\s+static)?|module|open|opens|package|provides|requires|to|transitive|uses|with)\s+)[a-z]\w*(\.[a-z]\w*)+/,lookbehind:!0,inside:{punctuation:/\./}},generics:{pattern:/<(?:[\w\s,.&?]|<(?:[\w\s,.&?]|<(?:[\w\s,.&?]|<[\w\s,.&?]*>)*>)*>)*>/,inside:{"class-name":t,keyword:e,punctuation:/[<>(),.:]/,operator:/[?&|]/}}})}(Prism);
+Prism.languages.scala=Prism.languages.extend("java",{keyword:/<-|=>|\b(?:abstract|case|catch|class|def|do|else|extends|final|finally|for|forSome|if|implicit|import|lazy|match|new|null|object|override|package|private|protected|return|sealed|self|super|this|throw|trait|try|type|val|var|while|with|yield)\b/,string:[{pattern:/"""[\s\S]*?"""/,greedy:!0},{pattern:/("|')(?:\\.|(?!\1)[^\\\r\n])*\1/,greedy:!0}],builtin:/\b(?:String|Int|Long|Short|Byte|Boolean|Double|Float|Char|Any|AnyRef|AnyVal|Unit|Nothing)\b/,number:/\b0x[\da-f]*\.?[\da-f]+|(?:\b\d+\.?\d*|\B\.\d+)(?:e\d+)?[dfl]?/i,symbol:/'[^\d\s\\]\w*/}),delete Prism.languages.scala["class-name"],delete Prism.languages.scala["function"];