remove container references and update documentation
remove container references and update documentation

foxyantho/Slim,iinux/Slim,juliangut/Slim,Sam-Burns/Slim,JoeBengalen/Slim,mnapoli/Slim,dopesong/Slim,RealSelf/Slim,feryardiant/slim,designermonkey/Slim,slimphp/Slim,akrabat/Slim,iinux/Slim,iinux/Slim,AndrewCarterUK/Slim