changes README to markdown
Merge branch 'master' of github.com:phatworx/devise_security_extension
Merge branch 'master' of github.com:phatworx/devise_security_extension
Merge branch 'master' of github.com:phatworx/devise_security_extension
Merge branch 'master' of github.com:phatworx/devise_security_extension
fixes registrations_controller_captcha (empty params)
fixes sessions_controller_captcha (params)
Version bump to 0.8.0