README.adoc

Single Sign On With GitHub

https://spring.io/guides/tutorials/spring-boot-oauth2/

https://github.com/spring-guides/tut-spring-boot-oauth2

Para registrar as aplicações no OAuth:

Github: https://github.com/settings/developers

Google: https://console.developers.google.com/apis/credentials

exception:[authorization_request_not_found] https://stackoverflow.com/questions/50908023/using-spring-security-oauth-using-a-custom-oauth-provider-i-get-authorization