add sorcery and test gems
WIP: user sessions
pass basic user session test; WIP: mailer
pass initial sign-in tests
add basic signup acceptance tests
conver to decent exposure
remove decent decoration
generate mailer
switch pry for pry-rails
WIP: mailing

I had to edit the sorcery core migration file to remove null => false on
password fields in the user model. I
think this lets the before_create setup_activation hook in the user
model work.
still WIP: mailers
clean up routes, make more RESTful
first mail test passing
pretty format with html emails
add basic signup feature tests; add capybara-webkit
WIP: failing spec/features/user_activates_spec
add brute force protection rules
fix new_session / login route after failed signin
changed user resource to users resources
moving on