Summary:
After the RCTBatchedBridge refactor, the `-[NSNotificationCenter addObserver]` and `[removeObserver]` calls got divided between RCTBridge and RCTBatchedBridge. This diff does two things:
- Moved `removeObserver` out of RTCBatchedBridge and into `-[RCTBridge invalidate]`
- Moved `addObserver` from `bindKeys` to `setUp`. This is so that `-[RCTBridge reload]` will re-add the observer after invalidating and removing the observer
cc @tadeuzagallo
Closes https://github.com/facebook/react-native/pull/1212
Github Author: James Ide <ide@jameside.com>
Test Plan: Imported from GitHub, without a `Test Plan:` line.