Merge pull request #76 from visible-difference/develop

Develop merge into master
config.action_mailer.default_url_options for development for devise forgot password email
add   config.action_mailer.default_url_options for production
Merge branch 'feature' into develop
Merge branch 'develop'
devise initializer ENV['mailgun_sandbox_username']
Merge pull request #77 from visible-difference/master

updates from mail work