Merge pull request emberjs#2222 from lsdafjklsd/patch-1

Added documentation to the append method

Author: trek

packages/ember-views/lib/views/view.js

@@ -1478,6 +1478,10 @@ Ember.View = Ember.CoreView.extend(
     Appends the view's element to the document body. If the view does
     not have an HTML representation yet, `createElement()` will be called
     automatically.
+    
+    If your application uses the `rootElement` property, you must append
+    the view within that element. Rendering views outside of the `rootElement`
+    is not supported.
 
     Note that this method just schedules the view to be appended; the DOM
     element will not be appended to the document body until all bindings have