fediz idp form based authentication

[Matthew Broadhead]

with fediz how to switch everything to FORM based auth instead of BASIC? 
Chrome caches all the BASIC stuff

i looked in services/idp/src/main/webapp/WEB-INF/security-config.xml 
after reading this:
http://janbernhardt.blogspot.com.es/2015/01/single-logout-with-fediz-ws-federation.html
but the file doesn't look the same as the one in the example