Support for Scala 2.11

Fixes #14
Merge pull request #22 from ambiata/topic/14-scala-2.11-cross-compile

Support for Scala 2.11
Support EMR tags.
Upgrade to Scala 2.11.2 and make it the default
Merge pull request #23 from ambiata/topic/scala-2.11.2

Upgrade to Scala 2.11.2 and make it the default
compiled with the dir paths changes from mundane