Add and update content to deploy site: (#26)

- Add logo
- Add SCSS variables and CSS rules
- Convert vignette title from yaml to h1 in order to circumvent an issue
  in adodownr

.gitignore

@@ -30,6 +30,9 @@
 !CONTRIBUTING.md
 !LICENSE*
 
+# Track files related to doc site's style and structure
+!src/dev/assets/*
+
 * Unignore reproot files
 !reproot*.yaml
 

README.md

@@ -1,10 +1,9 @@
 # `selector`
 
 Select variables by characteristic (char) or regular expression (regex)
-<!-- 
-TODO: uncomment when logo is posted
+
 <img src='src/dev/assets/logo.png' align="right" height="139" />
- -->
+
 
 <!-- badges: start -->
 [![Lifecycle:

src/dev/assets/selector_site_theme.scss

@@ -0,0 +1,24 @@
+/*-- scss:defaults --*/
+
+// nav bar
+$navbar-bg: #483955;
+$navbar-fg: white;
+// body
+$body-bg: white;
+// font color
+// $link-color: #a6e3a1;
+
+/*-- scss:rules --*/
+
+// set package title's background color to the page's
+h1 > code {
+  background-color: $body-bg;
+}
+
+// use Stata IDE colors 
+// exclude README's Stata blocks for readability
+pre > code:not(.stata) , p > code {
+  background-color: #252526 !important;
+  // results
+  color: #b4ffb4;
+}

src/vignettes/how-to-create-qnr-metadata-dta.md

@@ -1,6 +1,4 @@
----
-title: How to create a questionnaire metadata data set from the JSON file
----
+# How to create a questionnaire metadata data set from the JSON file
 
 To create a questionnaire metadata data set, one must:
 

src/vignettes/how-to-get-questionnaire-json.md

@@ -1,6 +1,4 @@
----
-title: How to get the questionnaire JSON file
----
+# How to get the questionnaire JSON file
 
 There are two methods for getting the questionnaire JSON file: