message: Fix header title
diff: import React from 'react';
  import PropTypes from 'prop-types';
  -import { Text, View, FlatList, StyleSheet } from 'react-native';
  +import { Text, View, FlatList, StyleSheet, Platform } from 'react-native';
  import Meteor from 'react-native-meteor';
  import realm from '../lib/realm';
  import RocketChat from '../lib/rocketchat';
  @@ -61,11 +61,14 @@ export default class RoomsListView extends React.Component {
  static navigationOptions = () => {
  const server = RocketChat.currentServer ? RocketChat.currentServer.replace(/^https?:\/\//, '') : '';
  + const textAlign = Platform.OS === 'ios' ? 'center' : 'left';
  + const marginLeft = Platform.OS === 'ios' ? 0 : 20;
  return {
  - title: <View style={{ height: 10, width: 200, top: -20 }}>
  - <Text style={{ textAlign: 'center', fontSize: 16, fontWeight: '600', top: -5 }}>Channels</Text>
  - <Text style={{ textAlign: 'center', fontSize: 10, top: -5 }}>{server}</Text>
  - </View>
  + headerTitle: <View style={{ height: 10, width: 200, top: -10, marginLeft }}>
  + <Text style={{ textAlign, fontSize: 16, fontWeight: '600' }}>Channels</Text>
  + <Text style={{ textAlign, fontSize: 10 }}>{server}</Text>
  + </View>,
  + title: 'Channels'
  };
  }
  