complete switch to RCTEventEmitter.

[athibaud]

this module's event emitting is currently broken on latest versions of react (only tested with 0.30+, can't say for previous versions)

unfortunately the documentation isn't up to date but my understanding is that events should no longer be emitted on the global bus and that native modules should now use a subclassed/module-scopped NativeEventEmitter as can be seen here and there

the recent switch to RCTEventEmitter only affected the native code. so the current js code was listening on the global bus while the native code was sending events on the RNBranch-scopped bus... this pull request updates the js code to listen on that scopped bus.

cc @nicklockwood (sorry for blindly cc'ing you in here, but i would appreciate if you could confirm this is indeed the new/correct way of communicating via events.)

[rt2zz]

@athibaud my mistake I published and emergency v0.4.1 with the fix, but did not merge to master branch. The one thing missing from your PR is android support which still uses the old style event emitter. I pushed the fix to master now.

Thanks!!

[athibaud]

@rt2zz perfect! oops, my bad for android :) thanks.