* There will be the communication messages show at the top of every page.
* Because the agent move randomly, sometime it is hard to get to the gold-mine.

First page.
- Input 2 gold-mines location at the bottom of the page. 
- This will place 2 gold-mines to the world. 

Second page.
- First it will check the location of 2 gold-mines.
- If valid, each will be placed on the world.
- Click start to start the system. 

Third page.
- User will be able to click to see each step the agent move step by step.
- The message about the action and communication will be shown.