feat(controller): add the explanation

- add the README.md
- refactor to use an app.js

Author: cironunes

README.md

@@ -5,7 +5,7 @@ Even with AngularJS providing us a pretty testable way of work, we still need so
 
 ## Table of contents
 
-- [Controllers](https://github.com/cironunes/angular-testing-recipes/blob/master/src/controller.js)
+- [Controllers](https://github.com/cironunes/angular-testing-recipes/tree/master/controller)
 - Services
 - Filters
 - Directives

app.js

@@ -0,0 +1,5 @@
+(function() {
+  'use strict';
+
+  angular.module('myApp', []);
+}());

controller/README.md

@@ -0,0 +1,56 @@
+# Controller
+> Testing recipes for controllers
+
+## Table of contents
+
+- [Boilerplate](#boilerplate)
+- [Expose properties](#expose-properties)
+- [Expose methods](#expose-methods)
+- [Watchers](#watchers)
+- [$destroy](#$destroy)
+- $emit
+- $broadcast
+- $on
+- $apply
+
+## Boilerplate
+
+Before start we need to initialize the related controller and mock it's dependencies.
+
+```js
+describe('SampleController', function() {
+    'use strict';
+
+    var $rootScope,
+        ctrl, scope;
+
+    // load the related module before each spec runs
+    beforeEach(module('moduleName'));
+
+    // inject the $controller service to load the SampleController
+    // and the $rootScope
+    beforeEach(inject(function(_$rootScope_, _$controller_) {
+        // save the injected $rootScope into a variable available across the whole file
+        $rootScope = _$rootScope_;
+
+        // create a brand new scope
+        scope = $rootScope.$new();
+
+        // load the SampleController mocking the $scope to the one created before
+        ctrl = $controller('SampleController', {
+            $scope: scope
+        };
+    }));
+
+    ...
+});
+```
+
+## Expose properties
+
+## Expose methods
+
+## Watchers
+
+## $destroy
+

controller/controller.js

@@ -1,7 +1,7 @@
 (function() {
   'use strict';
 
-  angular.module('myApp', [])
+  angular.module('myApp')
     .controller('SampleController', SampleController);
 
   function SampleController($scope) {

karma.conf.js

@@ -18,6 +18,8 @@ module.exports = function(config) {
       'bower_components/angular/angular.js',
       'bower_components/angular-mocks/angular-mocks.js',
 
+      'app.js',
+
       'controller/controller.js',
 
       'controller/controller.spec.js'