Merge pull request #862 from photonstorm/dev

`this.textureChange` is no longer used in any object, ...
Fixed typo in URL
Merge branch 'dev' of https://github.com/GoodBoyDigital/pixi.js into dev
Added 0 width check to DisplayObjectContainer
Remove trailing commas from object property lists

Removing trailing commas for:
- internal consistency;
- compatibility with the Google Closure compiler defaults.

The Google Closure compiler assumes ECMAScript 3 and emits errors when
parsing objects with trailing commas in their property list.
(Compilation succeeds if the user manually specifies ECMAScript 5.)
Merge pull request #866 from ndr-qef/extraneous-commas

Remove trailing commas for Google Closure compatibility
Fixes #870

Rounded rect now works in webGL