Added documentation and removed deprecated methods.

This pull request addresses #84 and #103. @BamX, @zachberger, can you look over the documentation and see if it looks okay? I also tweaked the wording of a few strings used in the Template Framework Project.

Also, @BamX, I noticed you added a deprecated attribute to `completionBlock` in G8RecognitionOperation.h. Since the recognition operation feature is pretty new and hasn't been in a release yet, how would you feel about just removing `completionBlock` instead of denoting it as deprecated?