Added keyboard listener
input.rb now requires softkeyboard.rb
Added SoftKeyboard class now has initialization method
Renamed softKeyboard.rb to androidKeyboard.rb
Fixed minor error is previpus code
Deleted AndroidKeyboard initializer to avoid problems with subclassing.
Added attr_accessor gosu_window
Deleted androidKeyboard file, it didnt work.
Added listeners to the activity for key events.
Working version. Key events are captured
Added code to restore the keyboard after the windows lost focus.
It does not work well.