Adding, enhancing commands

* now hubot will respond to cr and pr in addition to code review
* hubot assumes that *just* a link to a PR is a code review
* you can tell hubot to nm and it will undo the last addition
Adding shortcuts for flagging code as under review
Giving alleybot some human interaction
99 bottles of beer
Whoops, upping time limit back from debug
Merge pull request #1 from alleyinteractive/command-enhancement-v2

Adding, enhancing commands