Merge pull request #12 from ysimonson/master

Switch to express 3
Fixed bug in addGroupMembers (inverted args)
Merge branch 'master' of git://github.com/dotcloud/stack.io
Added anonymous users - one failing test
Fixed failing test for new anon group
Replaced reduce call with equivalent map call
First version of anonymous group/user - progress currently blocked due to a bug in sqlite-wrapper
Added UDP connector
Added tests back
Removed --debug for test runner
Merge branch 'feature/anonymous' into develop