Update RFToolbarButton.h

simplified code
Update RFToolbarButton.m

simplified code
Update RFKeyboardToolbar.m

simplified code
Update RFExampleToolbarButton.m

made changes to work with simplified code.
Update ViewController.m

made changes to work with simplified code.
Update RFToolbarButton.h

added necessary code
Update RFToolbarButton.m

re-added buttonTarget
Update RFToolbarButton.h

added blocks
Update RFToolbarButton.m

added blocks
Delete RFExampleToolbarButton.m

remove because blocks are added
Delete RFExampleToolbarButton.h

remove because blocks are added
Update ViewController.h

removed toolbarButton subclass
Update ViewController.m

added code to reflect block update
Merge pull request #2 from Hackmodford/master

Simplifying codebase