BradLarson/GPUImage — pull request #1045 by karlvr (2013-06-23 03:43:49+00:00)
Title: GPUImageVideoCamera: make class methods to determine which cameras exist

The new iPod Touch doesn't have a back camera, so it's useful to determine which cameras exist before initting the GPUImageVideoCamera.

I have left instance methods of the same name so that the property getters still work, there are just class method alternatives now too.