initialize devise
Merge pull request #2 from bikolya/initial

initialize devise
add basic layout
add basic home page
add user model via devise
add simple auth logic to User
update layout a bit
add RSpec
add Devise test helpers
get rid of minitest in favor of rspec
[TODO] complete pending specs
fix rails admin dependencies
fix devise by changing strong params
add question and answer models
add db seed
add questions and answers controllers
update views for new entities
add basic layout
add basic home page
add simple auth logic to User