Added game over display
Upped version of gosu_enhanced
Extracted Grid::Point
Added Button for word entry
PositionHandler added.

I'm not happy with it at the moment.
Upped to gosu_enhanced 0.3.0
Updated OK sound
Updated readme.
Inserted words are now collected into a list.

Grid::GPoint broken out.
Passed position is checked against the word grid region before
action in toggle_select.
Updated readme.
Added fonts.
Extensively changed and re-factored.