Changed library name from 'tui' (text user interface) to 'texy' ('text' + 'sexy'), because 'tui' isn't
very intuitive in its pronounciation. The name, 'texy', may also be more memorable.

Decided to deprecate the ncurses and termios builds for 2 reasons:

1) The library is being designed to replace terminals, so adding an
abstraction wrapper for a terminal will be a waste of time.

2) The capabilities of a modern graphics library exceed that of a
terminal by a large margin. Most of the extension of the graphics library
(and there will be many) aren't going to be available on the terminal.

The source code tree will also be changed to reflect these decisions.