add cocoapods support

[vinnyp]

Please add support for Cocoapods. This dependency manager for iOS is standard in the industry and pretty straightforward to set up.

[rgregg]

Hi Vinny, this is on our backlog. I haven't tried it yet, but there is a way to point cocoapods at a raw GIT repository and have it pull the contents and build it as a library. That might be a way to get unblocked until we have official support.

[joshryan]

I second Vinny's request. Setting up a basic pod is pretty easy: http://guides.cocoapods.org/making/making-a-cocoapod.html