CocoaPods integration: easy integration for OS X and iOS projects

This .podspec file sets up the UriParser library so that it can be built with the CocoaPods system. As you can see, I've already submitted the library on my own fork of this repo:

http://cocoapods.org/?q=uriparser

However, I think it would be better if you accepted this pull request and take-over ownership of the pod so that any future changes you make to the library get propagated to everyone using it through CocoaPods. I can transfer ownership to you once you:

1. Merge the PR.
2. Tag the HEAD sha as '0.1.0'
3. Do a `git push --tags`.
4. Register your development machine with CocoaPods Trunk:
      `pod trunk register developer@covenanteyes.com 'YOUR NAME' --description='your-computer-name'`

More info:

- [How to Release a Pod](http://guides.cocoapods.org/making/making-a-cocoapod.html#release)
- [Getting Set up With CocoaPods Trunk](http://guides.cocoapods.org/making/getting-setup-with-trunk)

It's worth noting that the [VideoCore](https://github.com/jamesghurley/VideoCore) project is [soon-to-be using UriParser in pod form](https://github.com/jamesghurley/VideoCore/pull/13).