Fix "Auto Add Code" by Git 4:00
Add Cart Function
Update 1/4 15:30

- Full Validation For Sign Up
- Change Index to Dangnhap
- Fix some bugs
Update 1/4 18:14

- Get user ID
- Fix some bugs
Merge branch 'master' of https://github.com/kelvinlee93/SMobile into kelvinlee93-master
Merge pull request #26 from kelvinlee93/master

Update 1/4 18:14