Depth Image support added
Merge pull request #348 from jayrambhia/stereo3D

Depth Image support added. This is awesome. You get the official SimpleCV awesome pull request of the day award (OSCVAPRoTD). In honor of this award I grant you this cat gif. ![Award](https://lh5.googleusercontent.com/-Zk_xoSha4jA/UNH4gWKmdsI/AAAAAAAAGns/1Acx-WAEVMA/s400/131.gif)