Update dependency @react-native-community/cli to v2

Thalia Technicie
2019-07-07T21:42:43+02:00

This MR contains the following updates: | Package | Type | Update | Change | |---|---|---|---| | [@react-native-community/cli](https://github.com/react-native-community/react-native-cli) | dependencies | major | [`1.10.0` -> `2.1.1`](ht...

@react-native-community/cli | dependencies | major | 1.10.0 -> 2.1.1