added embedded mongo + replaced unnecesary var declarations
Merge pull request #27 from ClaraAllende/master

Embedded Mongo
Merge branch 'master' of https://github.com/SideEffectIdeas/openmusic-node

Conflicts:
	openmusic-node/src/test/scala/ar/com/sideeffect/openmusic/node/test/PlaylistTest.scala