Install and integrate Space Commander to deal with code formatting

[orta]

From @orta on January 16, 2015 18:52

Copied from original issue: artsy/eigen-private#2124

[alloy]

Not sure what that formatter does, but since we don't use AppCode it feels kinda moot. We'll have to look into one of those clang based ones.

[orta]

we're using space commander on folio: https://github.com/square/spacecommander
Would recommend using it, it's worked out good for me so far.

[alloy]

Yeah, that’s the one we should try 👍

[orta]

Ideally, once #520 is merged then that's all long running PRs ( with the exception of #227 ) closed, and you can also run synx too.