fix(sample): Fix for jsFiddle integration

Author: Di Peng

docs/spec/ngdocSpec.js

@@ -89,6 +89,14 @@ describe('ngdoc', function(){
             '<pre class="doc-source">\n&lt;&gt;\n</pre></doc:example><p>after</p>');
       });
 
+      it('should preserve the jsfiddle attribute', function(){
+        var doc = new Doc('@description before <doc:example>' +
+            '<doc:source jsfiddle="foo">lala</doc:source></doc:example> after');
+        doc.parse();
+        expect(doc.description).toContain('<p>before </p><doc:example>' +
+            '<pre class="doc-source" jsfiddle="foo">lala</pre></doc:example><p>after</p>');
+      });
+
       it('should escape <doc:scenario> element', function(){
         var doc = new Doc('@description before <doc:example>' +
             '<doc:scenario>\n<>\n</doc:scenario></doc:example> after');

docs/src/ngdoc.js

@@ -111,9 +111,11 @@ Doc.prototype = {
                  '</pre></div>';
         });
       } else if (isDocWidget('example')) {
-        text = text.replace(/(<doc:source>)([\s\S]*)(<\/doc:source>)/mi,
-          function(_, before, content, after){
-            return '<pre class="doc-source">' + htmlEscape(content) + '</pre>';
+        text = text.replace(/<doc:source(\s+jsfiddle="[^"]+")?>([\s\S]*)<\/doc:source>/mi,
+          function(_, jsfiddle, content){
+            return '<pre class="doc-source"' + (jsfiddle || '') +'>' +
+                      htmlEscape(content) +
+                   '</pre>';
           });
         text = text.replace(/(<doc:scenario>)([\s\S]*)(<\/doc:scenario>)/mi,
           function(_, before, content, after){

docs/src/templates/doc_widgets.js

@@ -28,7 +28,7 @@
     //jqlite instead. jqlite's find() method currently supports onlt getElementsByTagName!
     var example = element.find('pre').eq(0),  //doc-source
         exampleSrc = example.text(),
-        jsfiddle = element.find('doc:source').attr('jsfiddle') || true,
+        jsfiddle = example.attr('jsfiddle') || true,
         scenario = element.find('pre').eq(1); //doc-scenario
 
     var code = indent(exampleSrc);