update gemfile
update gemfile.lock, add local host to db.yml
set up devise
create devise user and devise views
add username, firstname, and last name to user
configure spec/rails_helper
test user validations, remove rspec warnings
add username to devise user, allow to sign in with either username or password
add site controller and site index view
add navbar partial to layouts, style basic navbar
install foundation, update layouts/application view
update navbar
update navbar with singed_in? conditional and username
add and configure simplecov gem, ignore coverage