change github commit response to json for consistency w/ github oneboxes #156
add #url and #match methods to github commit onebox, change module to json #156
use correct #match method for github onebox commit - not pull request #156
update gravatar and time/date tests to expect correct results #156
update github commit onebox to use json module in #data vars #156
update github commit onebox template to use new #data vars. [fixes #156]
Merge pull request #159 from dysania/use-json-for-github-commit-onebox

Use JSON for Github Commit onebox