Merge pull request #84 from onedayitwillmake/dev

Fixed bug in LinkedList#remove that could cause first to point to a dead node
Fixed bug in LinkedList#remove that could cause first to point to a dead node
Adding docs.
jsdoc blocks added to every file and tidied up.
Working through building the docs.
Merge pull request #85 from onedayitwillmake/dev

Fixed accidentally overwroting remove function with a prepend function
More docs coming on.
More docs and quick patch to stop the body.allowRotation messing things up.
Preparing more documentation.
Finished Group documentation.
fix typo

small contribution is small :)
More docs.
Merge pull request #87 from STuFF/patch-1

fix typo
More docs.
Input and keyboard docs.
Input, Loader and Math docs tidied up.
Making sprite.body optional
Merged with latest dev
Made sprite.body optional