adds user controller, and migrates user table into db
adds sessions controller
adds root_path
adds new.html.erb, fills out session controller
adds form for new session in sessions/new.html.erb
builds out users controller and creates users/new.html.erb file
adds users routes, and builds out user/new.html.erb
modifies application and user controller and fixex typos in users/new.html.erb
adds logout route sessions controller. builds out layout application to handle session logged_in? method
working copy with functional login and logout routes