Added travis ci config

Author: kiran

.travis.yml

@@ -0,0 +1,3 @@
+language: node_js
+node_js:
+  - "stable"

package.json

@@ -6,7 +6,7 @@
   "scripts": {
     "start": "./node_modules/.bin/gulp server",
     "prepublish": "./node_modules/.bin/babel ./src --out-dir ./lib",
-    "test": "./node_modules/.bin/karma run"
+    "test": "./node_modules/.bin/karma start --single-run"
   },
   "repository": {
     "type": "git",