Feature(multiple pop): now we can pop multipe scenes with Actions.pop…

… (#806)

* Feature(multiple pop): now we can pop multipe scenes with Actions.pop([number]), like Actions.pop(2)

* Fix(format)

* Fix(data check, format): compare data with index, add semicolon

* -Fix(format)

* Fix(format)

Update MIGRATION.md

only allow ones routing in 1 time

Merge pull request #538 from aksonov/revert-536-feature/react-native-24

Revert "[WIP] Get Example app working with React 0.24+ "

Merge pull request #406 from Froelund/master

Added DrawerExample

Update README.md

Update README.md

add refresh action to change props for current route without transitions

improve TabBar, support initial prop for Routes

publish new version