Add index.js to save everyone fiddling with their eslint and/or flow configs
Add index.js to save everyone fiddling with their eslint and/or flow configs

Context: https://github.com/react-native-community/react-native-linear-gradient/issues/110

react-native-community/react-native-linear-gradient,react-native-community/react-native-linear-gradient,react-native-community/react-native-linear-gradient,react-native-community/react-native-linear-gradient