Create abstract model and interface.
#1 #2 Add entities

- Member entities
- Store entities
- Collection entities
#1 #2 Add models

備用
#1 member model 加入登入的API
Formating coding style
#1 登入驗證功能實作
#1 登入功能實作
Renamed

store -> restaurant
commodity -> cuisine
Merge pull request #5 from MilesChou/construct-models

Construct models