Merge pull request #31 from kmussel/master

fixed unpersisted rels
Update specs to catch new relationship bug
Remove puts
Add config setting for level 2 cache
Add console rake task, point back at OrientDB master, and VertexInstance#limit
add some logging, expose user and url from connection
remove dup conn call
don't wrap nil
Remote puts
Lets try just graphshutdown
Add ActiveSupport::HashWithIndifferentAccess to valid property types
fixed up some loading issues of orientdb and edge query