obtain VBO name from GL before using it
"toji" renderer now working (mostly?)

The "toji" renderer inspired by the work of Brandon Jones [1] now appears
to work with one obvious caveat: scroll direction is inverted. Perhaps even
the picture is being flipped over the X and Y axes and the scroll direction
is actually correct.

[1] http://blog.tojicode.com/2012/07/sprite-tile-maps-on-gpu.html
removed some lint
Merge pull request #2 from hdon/master

"Toji" renderer works, still needs work on GL3.0, do indeed need to be sure the proper attributions get placed!