v0.6.0-beta2

1. Patch requestIdleCallback for react-devtools-core 3d3da36 0aacac7
   (It's for this troubleshoot, but it just patch the legacy vendor bundle, the devtools backend will included in new version of react-native package)
2. Add serialize option for redux enhancer 5ae0fa1 (See this release of redux-devtools-extension)
3. Update to electron@1.6.1 (beta)