Added a configuration to configuration.yml
Update SimpleLdapExtension.php

Forgot an s for redirect
eddited Configuration
Merge branch 'v2.1.1' of https://github.com/yunai39/SimpleLdapBundle into v2.1.1
Change the Readme, and added a default user
Merge branch 'v2.1.1' of https://github.com/yunai39/SimpleLdapBundle into v2.1.1