[NO MERGE]Try to fix the react-native view initialized twice

[qingfeng]

Related issues: TheWidlarzGroup/react-native-video#29

RT:
I added a log:

- (UIView *)view
{
  NSLog(@"RCTVideo init RCTVideo init");
  return [[RCTVideo alloc] initWithEventDispatcher:self.bridge.eventDispatcher];
}

result:

2015-05-06 02:50:18.218 gouhuo-native[67470:4294635] RCTVideo init RCTVideo init
2015-05-06 02:50:18.218 gouhuo-native[67470:4294635] RCTVideo init RCTVideo init

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[ide]

This is intentional due to how React Native works. Every view class creates one extra view instance to provide default values for React's diffing algorithm.

If this is causing issues for you, it's likely because your view class is creating some resource that it should be lazily initializing instead. So try deferring the initialization of those resources as late as possible, for example when properties are set.