Merge pull request #2 from Quinten/master

merge master into gh-pages
Created the base js file
Centered wrapper in css
created a basic engine
Updated canvas id
Updated green color
test for translating origin of drawing to center
test for translating origin of center update
Created grid-state.js
Added meta viewport tag
Added grid-state.js to index.html
testing the gridstate in the engine
Added currentState to ngn object ?
state destroy function added
made currentState an accessible property on ngn
currentState as accessible property on ngn fix
Draw a grid
test to translate the context
test to see if it centered correctly
Update grid-state.js