Add hipchat gem
First pass at a HipChat integration

TODO:
* integration testing
* more info in message? (# of affected users, # of crashes)
* prettier message?
* add logo file
Bump version to 2.2.0
Add pages

* One for the API Token
* One for the room & notifications
Change Service::Schema#boolean to checkbox

It will display as a checkbox in the UI.
boolean wasn't used by any services but wouldn't show up
correctly in the UI.
Bump version to 3.0.0

This is a breaking change
Use the non-deprecated form of HipChat::Room#send

Pass a hash with options with a key for notifications,
instead of just a boolean value for notifications.
Note that the API Token only needs to be a notification token
Merge pull request #6 from crashlytics/rename-boolean-to-checkbox

Rename Service::Schema#boolean to checkbox
Merge branch 'master' into hipchat

Conflicts:
	lib/service/version.rb
        bumped version to 3.1.0
Change HipChat boolean -> checkbox
Bump version to 3.1.0
Log exceptions
Tweak messages per Wayne's feedback
Merge pull request #7 from crashlytics/hipchat

Add Hipchat Integration