Merge pull request #314 from andyoll/play_2.2

changes to support play 2.2.0-RC1
Update README.md
added keyName
added basic auth model
Corrected pattern for matching class and package names that could potentially contain digit characters as well as underscores.
Merge pull request #332 from MadMartian/master

Swagger only honors classes with alphabet characters
Merge branch 'master' into play_2.2.0-swagger_1.3
added support for parameter annotations, and added 1st batch of tests