fixes issue #18
fixes issue #18

I've experienced that Surface fails due to the webkit transform test at
https://github.com/Famous/core/blob/master/Surface.js#L15 - This is the
case when loading scripts before body is created.

We could change it to something like:
```js
var usePrefix = document.createElement('div').style.webkitTransform !==
undefined;
```

Lkraljevic/famous,ziteboard/famous,gvnq/Famous_core,Bizboard/famous,holmesal/famous-global-build,Faiz7412/famous,SuPenguin/famous,gdi2290/famous,dcsan/core,wgester/famous,FamousArchives/core,SeanOceanHu/famous,chinakids/famous,Famous/core,Famous/famous,Faiz7412/famous,ziteboard/famous,charosez/core,trusktr/famous,Famous/famous,simple10/core,Thecontrarian/core,Offirmo/famous