Video was resuming after seek when setRate was called after play/pause in applyModifiers. According
to Apple's docs play/pause are equivalent to setRate:1.0 and setRate:0.0, meaning that if rate was
1.0 the video resumed after seeking completed.

Update for 0.7.1 release

Fix issues that arise due to accessing _player on a queue other than main

Mild clean ups

Fixes #66

Remove Notification Center observers on dealloc

Changes to README

- Call super in removeFromSuperview
- setRate has to come at the end of modifiers
- Switch to requireNativeComponent

Fix inline image in README

Fix 'Invalid number value (NaN) in JSON write' crash

support for absolute path and file:// paths

Add playableDuration property to onProgress event