1. Add two groceries and their events.
2. Gather information price is changed to 1000.
3. The grocer sell 15 types of items.
4.Added an arrowhead icon pointing at the Qustion Mark, and vanish after openning the guidance once.[2017.1.3]
1.增加两种杂货，可以点开仓库点击查看说明。
2.打听消息改成1000铜币。
3.杂货商也卖15种货物。
4.增加一个指向问号的箭头，点击说明一次后消失。[2017.1.3]