Extended support to 15 char.

This version of the project allows a user to input any word up to 15
characters. It also displays a "Winner" or "Looser" string in the
hangman text view at the end of the game.

Change-Id: Ib33a2738b7dcc75d7eb899546b801d3163b2d8ed
Signed-off-by: Dan Griffin <dcompgriff@gmail.com>