fix(README.md): unbind doc

README.md

@@ -78,6 +78,7 @@ myApp.config(function (localStorageServiceProvider) {
     .setPrefix('yourAppName');
 });
 ```
+<<<<<<< HEAD
 ###setStorageType
 You could change web storage type to localStorage or sessionStorage<br/>
 **Default storage:** `localStorage`
@@ -217,16 +218,21 @@ myApp.controller('MainCtrl', function($scope, localStorageService) {
 ###bind
 Bind $scope key to localStorageService.  
 **Usage:** `localStorageService.bind(scope, property, value[optional], key[optional])`  
-***key:*** The corresponding key used in local storage 
+***key:*** The corresponding key used in local storage
+**Returns:** deregistration function for this listener.
 ```js
 myApp.controller('MainCtrl', function($scope, localStorageService) {
   //...
   localStorageService.set('property', 'oldValue');
-  localStorageService.bind($scope, 'property');
+  var unbind = localStorageService.bind($scope, 'property');
   
   //Test Changes
-  $scope.property = 'newValue';
-  console.log(localStorageService.get('property')) // newValue;
+  $scope.property = 'newValue1';
+  console.log(localStorageService.get('property')) // newValue1;
+  //unbind watcher
+  unbind();
+  $scope.property = 'newValue2';
+  console.log(localStorageService.get('property')) // newValue1;
   //...
 });
 ```
@@ -302,7 +308,7 @@ myApp.controller('MainCtrl', function($scope, localStorageService) {
 });
 ```
 
-Check out the full demo and documentation at http://gregpike.net/demos/angular-local-storage/demo.html
+Check out the full demo at http://gregpike.net/demos/angular-local-storage/demo.html
 
 ##TO DO:
 - Expand Readme

src/angular-local-storage.js

@@ -365,6 +365,8 @@ angularLocalStorage.provider('localStorageService', function() {
       return storageType;
     };
 
+    // Add a listener on scope variable to save its changes to local storage
+    // Return a function which when called cancels binding
     var bindToScope = function(scope, scopeKey, def, lsKey) {
       if (!lsKey) {
         lsKey = scopeKey;
@@ -380,7 +382,7 @@ angularLocalStorage.provider('localStorageService', function() {
 
       $parse(scopeKey).assign(scope, value);
 
-      scope.$watchCollection(scopeKey, function(newVal) {
+      return scope.$watchCollection(scopeKey, function(newVal) {
         addToLocalStorage(lsKey, newVal);
       });
     };

test/spec/localStorageSpec.js

@@ -277,6 +277,23 @@ describe('localStorageService', function() {
     expect($rootScope.property).toEqual(localStorageService.get('property'));
   }));
 
+  it('should be able to unbind from scope variable', inject(function($rootScope, localStorageService) {
+
+    localStorageService.set('property', 'oldValue');
+    var lsUnbind = localStorageService.bind($rootScope, 'property');
+
+    $rootScope.property = 'newValue';
+    $rootScope.$digest();
+
+    expect($rootScope.property).toEqual(localStorageService.get('property'));
+
+    lsUnbind();
+    $rootScope.property = 'anotherValue';
+    $rootScope.$digest();
+
+    expect($rootScope.property).not.toEqual(localStorageService.get('property'));
+  }));
+
   it('should be able to bind to properties of objects', inject(function($rootScope, localStorageService) {
 
     localStorageService.set('obj.property', 'oldValue');