npm_and_yarn in /example for @react-native-community/cli, @react-native-community/cli-platform-android, @react-native-community/cli-platform-ios - Update #1462489434

npm_and_yarn in /example for @react-native-community/cli, @react-native-community/cli-platform-android, @react-native-community/cli-platform-ios - Update #1462489434 #1443