Replace deprecated 'compile' gradle configuration with 'implementation'
Replace deprecated 'compile' gradle configuration with 'implementation'

According to [ReactNative@0.57](https://github.com/react-native-community/react-native-releases/blob/master/CHANGELOG.md#057) default gradle version is now `4.4`.
stefalda/ReactNativeLocalization,stefalda/ReactNativeLocalization,stefalda/ReactNativeLocalization,stefalda/ReactNativeLocalization