Sprite Direction Fix

Fixes #125

Changed the 1 to .1f in playerscript so the player always turns.
Generic Scene Change

Added functionality to only load a new XML file when the boolean is
checked.  Generic scene handles loading of chapter1/2/3/4.xml.
Merge https://github.com/JohnMai/WhiteSharks
Merge pull request #173 from Kiroshima/master

Sprite Direction Fix