Update budo script to match latest aframe's

<a href="https://github.com/cvan"><img src="https://avatars.githubusercontent.com/u/203725?v=3" align="left" width="96" height="96" hspace="10"></img></a> **Issue by [cvan](https://github.com/cvan)**
_Tuesday Dec 22, 2015 at 00:56 GMT_
_Originally opened as https://github.com/aframevr/aframe-core/issues/738_

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per https://github.com/aframevr/aframe/pull/320/files
