Add .jshintrc and adjust code to pass

Author: lejeunerenard

.jshintrc

@@ -0,0 +1,17 @@
+{
+   "boss": true,
+   "curly": true,
+   "eqeqeq": true,
+   "eqnull": true,
+   "expr": true,
+   "immed": true,
+   "noarg": true,
+   "onevar": true,
+   "quotmark": "single",
+   "smarttabs": true,
+   "trailing": true,
+   "unused": true,
+   "node": true,
+   "multistr": true,
+   "onevar": false
+}

Gruntfile.js

@@ -15,8 +15,7 @@ module.exports = function(grunt) {
       // config for jshint
       jshint: {
          options: {
-            eqeqeq: true,
-            trailing: true
+            jshintrc: true
          },
          target: {
             src: ['src/**/*.js']