ensure that timeuuid timestamps do not collide under high contention
formatting, dupe code cleanup on test methods
minor formatting tweak
Added overloaded form for app-specified timestamp. Addresses USERGRID-1292
Merge pull request #65 from apigee/USERGRID-1185

Usergrid 1185 - support push notifications
Merge pull request #66 from apigee/timeuuid-guarantee

Timeuuid guarantee