Check for updates on each run (in the simulator)
Merge pull request #1089 from realm/tg-hourly-update-check

Change update checker frequency to once an hour
add missing properties to RLMCollection protocol
Merge pull request #1136 from realm/al-collection

Ddd missing properties to RLMCollection protocol
Move the debugger summary string creation to obj-c

And provide a single C function to call so that the syntax in obj-c and Swift
is identical.
Make the RLMArray/RLMResults children provider work for Swift
Use direct ivar access for the RLMArray _realm ivar