global router
/ -> Home /join -> Join /login -> Login /search -> Search -> 규칙 예외부분들!!! = url을 줄이기 위함
users router
/users/:id -> See User /users/logout -> Log out /users/edit -> Edit MY Profile
/users/delete -> Delete MY Profile
video router
/videos/:id -> See Video /videos/:id/edit -> Edit Video /videos/:id/delete -> Delete Video /videos/upload -> Upload Video