Set "source" branch as the default branch

[RadicalZephyr]

With User/Organization pages the master branch is always the one that is served as the site, so you can safely make the source branch the default branch.

This would be convenient since it would make that the default branch shown when someone browses to the code on github, and it would also make pull requests automatically target it.

[unixorn]

@RadicalZephyr Good idea. @pengwynn, could change the default branch? I don't have access to the repository settings. Thanks!

[pengwynn]

Worth a shot, I just changed it.

[unixorn]

Thanks, @pengwynn