aggregator2: update the documentation to reflect the latest changes and features.
aggregator2: update the documentation to reflect the latest changes and features.

jschlyter/simplesamlphp,ghalse/simplesamlphp,girgen/simplesamlphp,grnet/simplesamlphp,dnmvisser/simplesamlphp,maytechnet/simplesamlphp,cwaldbieser/simplesamlphp,jschlyter/simplesamlphp,gtkrug/simplesamlphp,dialogik/simplesamlphp,shoaibali/simplesamlphp,maytechnet/simplesamlphp,BrettMerrick/simplesamlphp,girgen/simplesamlphp,Kunstmaan/simplesamlphp,cwaldbieser/simplesamlphp,jschlyter/simplesamlphp,grnet/simplesamlphp,girgen/simplesamlphp,Kunstmaan/simplesamlphp,madmatt/simplesamlphp,ghalse/simplesamlphp,simplesamlphp/simplesamlphp,sitya/simplesamlphp,sitya/simplesamlphp,dialogik/simplesamlphp,sitya/simplesamlphp,StudentLifeMarketingAndDesign/simplesamlphp,shoaibali/simplesamlphp,StudentLifeMarketingAndDesign/simplesamlphp,grnet/simplesamlphp,jschlyter/simplesamlphp,Kunstmaan/simplesamlphp,madmatt/simplesamlphp,StudentLifeMarketingAndDesign/simplesamlphp,Kunstmaan/simplesamlphp,simplesamlphp/simplesamlphp,dialogik/simplesamlphp,maytechnet/simplesamlphp,jschlyter/simplesamlphp,simplesamlphp/simplesamlphp,dialogik/simplesamlphp,madmatt/simplesamlphp,BrettMerrick/simplesamlphp,dzuelke/simplesamlphp,girgen/simplesamlphp,gtkrug/simplesamlphp,shoaibali/simplesamlphp,girgen/simplesamlphp,cwaldbieser/simplesamlphp,dialogik/simplesamlphp,dzuelke/simplesamlphp,cwaldbieser/simplesamlphp,dnmvisser/simplesamlphp,ghalse/simplesamlphp,gtkrug/simplesamlphp,BrettMerrick/simplesamlphp,sitya/simplesamlphp,StudentLifeMarketingAndDesign/simplesamlphp,dnmvisser/simplesamlphp,dzuelke/simplesamlphp,gtkrug/simplesamlphp,ghalse/simplesamlphp,grnet/simplesamlphp,maytechnet/simplesamlphp,dzuelke/simplesamlphp,BrettMerrick/simplesamlphp,shoaibali/simplesamlphp,dnmvisser/simplesamlphp,madmatt/simplesamlphp,simplesamlphp/simplesamlphp