get started on documenting this stuff
more deployment docs
flesh out more docs related stuff
Remove example from parameter documentation

Let's rely on the example (below the parameter docs) to demonstrate
the example value.
Link to Commit Status docs
Trim trailing whitespace
:lipstick:
:lipstick:
cleanup a few things from @jasonrudolph's suggestions
Merge remote-tracking branch 'origin/master' into deployments

Conflicts:
	layouts/sidebar.html
add preview mode documentation
input from garen
first pass at a changelog for the deployments API preview
typoooo
:lipstick:
consolidate deployment status docs into deploment docs
Merge remote-tracking branch 'origin/master' into deployments
Merge 'upstream/master' into internal/master
Merge pull request #65 from github/upcoming-change-to-default-media-type

Announce upcoming change to default media type
drop a simple state diagram and simplify status docs