Add a thin embedded API backend
Merge branch 'master' of github.com:artsy/positron into internal-api

Conflicts:
	client/apps/edit/client/index.coffee
	client/apps/edit/test/client/index.coffee
	npm-shrinkwrap.json
fix tests
hmm different mongo versions?
moar semaphore debuggin' ¯\(º_o)/¯
Merge pull request #22 from craigspaeth/internal-api

@dzucconi (cc @dylanfareed & @dblock): Replace Spooky, direct API v2 interaction, and halbone with an internal api that could sync to both