update to rails 4.1
add rspec with dummy spec
add devise
devise setup (views and basic specs)
add database_cleaner
user enters his name at sign up
sign in feature
sign up spec fix
sign out
add twitter bootstrap
sign in style
sign in and sign up
user can create gadget with name
gadget should have a name
user can see gadget list
gadget editing
only owner can edit gadget
gadget updates
return to gadgets list if cancel
return back if cancel