Added subfolder to better accommodate cocoapods, Added pod spec.

Made a couple of changes to support cocoapods. Merge these if you will. Great tool, cocoapods compatibility would really help out the rest of the community. Message me if there are questions or issues.

When merging these commits, can you please add a tag in the form of 1.0.0 or other appropriate semantic version (Just don't use 0.0.1, this is the one already assigned in the cocoapods repository). This will help support cocoapods.