Added surgeon table, surgeon controller
Added surgeons new and index views so can add surgeons to db and then see list of them
Took away ability to add surgeons on main landing page, made users index also include surgeons who are now added on surgeons new view
Added -add surgeon- link to top menu and got -sign up- link to work. -logout- link still not working.
Logout button works, login / logout / sign up / add surgeons buttons appear appropriately if user is signed in vs signed out
Now able to create Surgeons from UsersController.