support multiple rails versions for specs in Gemfile
more permissive rails dependency in gemspec
make dummy rails app rails 4 friendly

make dummy rails app rails 4 friendly

add action_mailer dependency
add support for multiple rails versions to travis.yml
remove check for current_opensesame_user

keep intent of authenticate_opensesame!
Merge pull request #6 from rossta/rails4_support

Rails4 support