implement UserRespository and its test case
Commit to get Khoa code
Merge commit 'bed37be2d32b6ead09a8dfe48b926c050b48124e'
Merge branch 'master' of https://github.com/phuonghuynh/TechLooper
Implement User Service and its test case
Merge branch 'master' of https://github.com/khoa-nd/TechLooper
Persit user basic info