Walls.DEFAULT_OPTIONS.sides fix

`Walls.TWO_DIMENSIONAL` -> `Walls.SIDES.TWO_DIMENSIONAL`

Also, FWIW, we might want to define the Walls.SIDES object on L126 before the Walls.DEFAULT_OPTIONS object defined on L49.
Added grunt for linting and travis support
Get it linting
Update eslintrc
Merge pull request #2 from malandrew/patch-1

Walls.DEFAULT_OPTIONS.sides fix
Merge pull request #1 from FamousInternal/gruntLint

Get linting and Travis Support Working
Add travis Label to README
Merge pull request #2 from FamousInternal/travisLabel

Add travis Label to README
Merge branch 'public'
Update Travis and make it link
Merge pull request #4 from TheAlphaNerd/master

Update Travis and make it link
Merge pull request #1 from Famous/master

Update from original