rake tasks for auth management, auth specs
lots of stubbing in cypher session unit specs
changes required for 2.2 compatibility
Merge pull request #140 from neo4jrb/neo4j-2.2

changes required for 2.2 compatibility
Merge branch 'master' into auth
The day will come when we will test the rake tasks. That day is not today.
Use different exclusion filter, jruby is sad