Some minor changes to WildFly example README.md
Added Keycloak welcome page
Minor tweaks to login. Display 'Keycloak Administration' instead of 'Keycloak' when login to admin console. Add link to powered by Keycloak
Added Keycloak logo to login and registration forms
Merge pull request #152 from stianst/master

Keycloak welcome-page. Added logo to login and registration forms. Some minor updates to WildFly example README.md