user/group create/read
Merge pull request #96 from anilsaldhana/master

see comments
change IdentityManager producer to Dependent scope
Merge branch 'master' of github.com:picketlink/picketlink
IDM changes
Merge pull request #97 from anilsaldhana/master

see comments
fix javadoc for login() method
Merge branch 'master' of github.com:picketlink/picketlink
added foundation of authentication chapter to docs