Multiplayer mode almost done it, but I want more test before release it
In addition, I also updated several things until 9/2/2018 from the last update
1. smooth the camera, not stiff any more
2. little improved the AI
3. add a simple task list
4. changed some data for balance
5. add some new buildings
6. changed the signal of player on the Map
7. more tips for playing
8. changed color of tips