-added protocol RDRStickyKeyboardViewDelegate to add API for notifying about left/right button actions
-exposed the textView as a readonly property of RDRStickyKeyboardView to allow external classes to set themselves as UITextViewDelegates and handle UITextView content
minor log change
Merge branch 'feature/direct_access_to_buttons_and_textView' into develop
Merge branch 'release/0.0.3'