Merge pull request #20 from jexp/master

close transaction at end of test, to prevent db shutdown wait
#7 added bootstrap test
Merge remote-tracking branch 'origin/master'
#14 throw CdoException if a transaction exists while calling cdoManager.begin()
#14 throw CdoException if a transaction exists while calling cdoManager.begin()
#7 added provider for Neo4j embedded
#7 added provider for Neo4j embedded