[fixed] exception in InMemory classes
Version 0.0.6 release
neo4j: update neo4j to version 2.1.2
InternalIdentifierGraph: remove scala.actors.threadpool.Arrays import
Added Neo4j 2.x support.
Removed Root-Node usage, implemented labels for Node-Types and according functions.
Fixed tests to user according behavior...

Testes against simple GUI-Tests and the CeBit-Agenda without obvious issues!
Merge branch 'neo4j2.0-update' of https://github.com/trustathsh/visitmeta into neo4j2.0-update