feat(jqLite): add contents()

Author: mhevery

src/jqLite.js

@@ -35,6 +35,7 @@
  * - [bind()](http://api.jquery.com/bind/)
  * - [children()](http://api.jquery.com/children/)
  * - [clone()](http://api.jquery.com/clone/)
+ * - [contents()](http://api.jquery.com/contents/)
  * - [css()](http://api.jquery.com/css/)
  * - [data()](http://api.jquery.com/data/)
  * - [eq()](http://api.jquery.com/eq/)
@@ -556,6 +557,10 @@ forEach({
     return children;
   },
 
+  contents: function(element) {
+    return element.childNodes;
+  },
+
   append: function(element, node) {
     forEach(new JQLite(node), function(child){
       if (element.nodeType === 1)

test/jqLiteSpec.js

@@ -731,6 +731,16 @@ describe('jqLite', function() {
   });
 
 
+  describe('contents', function() {
+    it('should select all children nodes', function() {
+      var root = jqLite('<div>').html('before-<div></div>after-<span></span>');
+      var contents = root.contents();
+      expect(contents.length).toEqual(4);
+      expect(jqLite(contents[0]).text()).toEqual('before-');
+    });
+  });
+
+
   describe('append', function() {
     it('should append', function() {
       var root = jqLite('<div>');