Gemfile
.bundle install
.config/initializers/omniauth.rb
, add the settings for each of your providers.omniauth_prefix
setting /omniauth
, so the "Authorization callback URL" for github must be set to "https://devise-token-auth-demo.herokuapp.com**/omniauth**/github/callback"./[MOUNT_PATH]/:provider
for omniauth authentication.redirect-uri-mismatch
errors from your provider when using pow or xip.io urls, set the following in your development config: