Switch from WebGL to Canvas. Sort of Closes #3

Hello @sjkaliski, 

Please review the following commits I made in branch 'thebyrd-straight-lines'.

b69ecfe012e4d29a4c98837a228bc5052f7fbec9 (2014-08-12 18:42:11 -0400)
Switch from WebGL to Canvas. Sort of Closes #3

5ba9baa288dbe62ddc89b9940fc1b05baf2630a1 (2014-08-12 18:39:03 -0400)
jsformat


R=@sjkaliski
VISIBLE_CHANGES=Switch from WebGL to Canvas. Sort of Closes #3