1. Sign up VC
2. Login VC
1. SignupVC

2. LoginVC
User name, password and email checking logic
Login and Signup logic
Merge branch 'dev' into feat/profilePage

Conflicts:
	Chinese Union.xcodeproj/project.pbxproj
	Chinese Union/SignUpViewController.h
	Chinese Union/SignUpViewController.m
	Chinese Union/SignUpViewController.xib
Merge branch 'feat/profilePage' into dev