Using C++11 for settings branch.
Added audiosettings (stub only).
Added videosettings (stub only).
Created a sample serrings conf file.
Added Settings (stub only).
Added some basic attributes to VideoSettings.
Set up settings loading process (stub only).
Added XMLHelper class.
TileSetProcessor now derived from XMLHelper.
Now using tinyxml2::XMLError for error passing
Added some convenient error printing methods (XMLHelper).
Implemented VideoSettings logic.
Settings is now a singleton.
Fixed spelling mistake in VideoSettings.
VideoSettings now parses for tileset /-path.
Fixed tilesetpath in settings.xml.
Now using Settings to initialize game in main.cpp.