RN-LFVL-7 - Replacing renderFooter with ListFooterComponent

RN-LFVL-7-ReplaceRenderFooter.js

export default class Application extends Component {
  ...
  render() {
    if (this.state.isLoading) {
      ...
    } else {
      return (
        <FlatList
          ...
          ListFooterComponent={() => { // replaces renderFooter={() => {
            return (
              this.state.isLoadingMore &&
              <View style={{ flex: 1, padding: 10 }}>
                <ActivityIndicator size="small" />
              </View>
            );
          }}
          ...
        />
      );
    }
  }
}