Changed Utils from function to object
Added to TODO, testing for xml loading
Semi-completed with level loading.
Update of CGF required.
Bubble loading from JSON in 'game' state complete.
Added utility method for string2bool conversion
Edited Ogmo project to use strings instead of numbers for easier default
values for bubbles.
Added options to walls.js:
Added options default to wall
Added wall creation from JSON level data.
Type and error checking in Utils.stringToBool
Updated TODO