Add GUID helper to Utils
Add GUID helper to Utils
Add switch variable for cleaning database after tests
Use GUIDs for keys in store
Add Utils#extend method
IndexedDBStore#get should return a record with a GUID key
Merge with origin
Change 'id' to 'guid'
Modify IndexedDBStore#save to take a 'guid' argument
Merge pull request #6 from rymdjs/feature/guid-keys

Use GUID keys for records in database