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Merge branch 'master' of github.com:plorry/gramework
Implement canvas options for Dispatcher, plus initial Documentation

Fixes a bug where we weren't passing a surface into the draw signal
after changes in 93c7bbb5e2c2998d783358e1456d2533a4611063
Dont need to pass undefined.
Merge pull request #15 from bartek/master

Dispatcher bug fixes, docs, and tests