MOAR mustaches!
Fixed messages in auth.coffee for displaying a user's roles.
Merge pull request #620 from davereid/auth-role-listing-grammar

Fix user role message grammar in auth.coffee.
Port error handling from vthree-rethink
Fix method call to invokeErrorHandlers
Fix emitting errors. Needed to make sure invokeErrorHandlers was invoked on robot
Fix up old example
Document error handling
Merge pull request #624 from github/error-handling

Stop crashing on errors, and provide an API for publishing & subscribing to errors
Remove math.coffee for now, since the backend google thing has been taken down
Merge pull request #625 from github/hubot-calculator

Remove math.coffee for now
Merge pull request #599 from cannikin/master

MOAR mustaches!
Version bump to v2.7.0, and update CHANGELOG
Emit the message too
msg is actually a Response. build one of those so handlers can msg.reply
Merge pull request #627 from github/emit-error-msg-when-possible

Emit `msg` whenever possible along with `err`
Version bump to 2.7.1
set the X-Powered-By header in HTTP responses

Signed-off-by: Joshua Rubin <jrubin@zvelo.com>
Added QQ adapter to adapters document
Merge pull request #629 from xhan/master

Added QQ adapter to adapters document