Find: adds support for find queries against edges
Added method getFetchPlan()
Removed dependency on orientdb's @class
association fetchPlanJoin: for associated collections (not part of join) edges will be expanded in order to grab foreign keys
Associations fetchPlan: added ability to manipulate the fetchPlan level for child associations through configuration
Associations fetchPlan: expanding one-to-* associations
DeleteEdges: temporary workaround for issue: https://groups.google.com/forum/#!topic/orient-database/jlRFuFbdWNs
Associations: enabled expand results to replace PKs into objects
Config: moved fetchPlanLevel inside options and changed default to 1
Merge pull request #14 from appscot/cleverFetchPlan

Associations join: better fetch plan