Adds jshint gem

Gemfile

@@ -59,6 +59,9 @@ group :development do
   gem "binding_of_caller", ">= 0.7.1", :platforms => [:mri_19, :rbx]
   gem "metric_fu"
   gem "letter_opener" # for mocking emails for sending
+
+  # For linting JS with `rake jshint`.
+  gem 'jshintrb', '>= 0.2.4'
 end
 
 group :test do

Gemfile.lock

@@ -142,6 +142,10 @@ GEM
       railties (>= 3.2.0, < 5.0)
     i18n (0.6.9)
     journey (1.0.4)
+    jshintrb (0.2.4)
+      execjs
+      multi_json (>= 1.3)
+      rake
     json (1.8.1)
     json_pure (1.8.1)
     jwt (0.1.11)
@@ -338,6 +342,7 @@ DEPENDENCIES
   google-api-client
   haml-rails
   html5shiv-rails
+  jshintrb (>= 0.2.4)
   json
   kgio
   letter_opener

lib/tasks/jshint.rake

@@ -0,0 +1,41 @@
+# Load JSHint when jshintrb gem is available
+begin
+  require "jshintrb/jshinttask"
+  Jshintrb::JshintTask.new :jshint do |t|
+    t.pattern = "app/assets/javascripts/**/*.js"
+    #t.options = :defaults
+    # Custom options are below, uncomment the line
+    # above for the default set of options.
+    t.options = {
+      :bitwise => true,
+      :curly => false,
+      :eqeqeq => true,
+      :forin => true,
+      :immed => true,
+      :indent => 2,
+      :latedef => true,
+      :newcap => true,
+      :noarg => true,
+      :noempty => true,
+      :nonew => true,
+      :plusplus => false,
+      :regexp => true,
+      :undef => true,
+      :strict => true,
+      :trailing => true,
+      :sub => true,
+      :browser => true,
+      :devel => true,
+      :expr => true,
+      :predef => {
+        "requirejs" => false,
+        "require" => false,
+        "define" => false,
+        "Modernizr" => false,
+        "selectorSupported" => false,
+        "google" => false
+      }
+    }
+  end
+rescue LoadError
+end