Merge pull request #1 from Vertice/master

Entity Indexing Support
Merge pull request #3 from Vertice/master

check id$ after id
Merge pull request #4 from Vertice/master

change tests to expect id$.
Use id set by datastore plugin for index
populateRequest - assert args.data or args.type
Merge pull request #1 from darsee/master

merge changes