fix for publish-local

Conflicts:
	project/RogueBuild.scala
support for $ projection operator
optional ReadPreference on count()

Conflicts:
	rogue-core/src/main/scala/com/foursquare/rogue/MongoJavaDriverAdapter.scala
	rogue-core/src/main/scala/com/foursquare/rogue/QueryExecutor.scala
scala 2.11 support
2.4.0 release