Fixed fetchWhenSave can't work with new object.

Author: killme2008

lib/object.js

@@ -911,7 +911,7 @@
 
         var json = model._getSaveJSON();
 
-        if(method === 'PUT' && model._fetchWhenSave){
+        if(model._fetchWhenSave){
           //Sepcial-case fetchWhenSave when updating object.
           json._fetchWhenSave = true;
         }

lib/utils.js

@@ -410,7 +410,7 @@
     if (objectId) {
       url += "/" + objectId;
     }
-    if((route ==='users' || route === 'classes') && method === 'PUT' && dataObject._fetchWhenSave){
+    if((route ==='users' || route === 'classes') && dataObject._fetchWhenSave){
       delete dataObject._fetchWhenSave;
       url += '?new=true';
     }

test/object.js

@@ -309,6 +309,17 @@ describe('Objects', function(){
       });
     });
 
+    it("should fetch when save when creating new object.", function(done){
+      var p= new Person();
+      p.set('pname', 'dennis');
+      p.save().then(function(person) {
+        expect(person.get('company')).to.be('leancloud');
+        done();
+      }).catch(function(err) {
+        throw err;
+      });
+    });
+
     /*
 
        it("it should fetch relation post",function(done){