Update README.md

Fix incorrect reference to HEROKU_HOSTNAME to HEROKU_URL. See: https://github.com/github/hubot/issues/440
Merge pull request #42 from Hammertime38/master

Update user data when user changes names
Merge pull request #41 from russplaysguitar/patch-1

Update README.md
Log authentication errors, updated README
Added room to the data object created from the flows. This allows updated nicks to get into the hubot brain if the nick was changed while hubot was offline.
updated room to be current time in millis so it will be unique for each time Hubot starts
Merge pull request #45 from febbraro/master

Added room to the data object created from the flows.
Bump version
Revert "Merge pull request #45 from febbraro/master"

This reverts commit 86024b2ecc467a660fbacb6e373c5a263e7fca9b, reversing
changes made to 298e2907d34a19061404b37742affe128c1694bb.
Bump version
Update user nicks that are changed while hubot is offline

If anything, this adds a minimal amount of extra work to the launch process, but because robot.brain.userForId is abstract to the point that it only knows about user.id and options.room (for some odd reason), this puts the responsibility on the flowdock adapter to update the user's name if necessary.