Now using vars instead of instance variables for configuration
Now using vars instead of instance variables for configuration

Variables for configuration aren't exposed anymore to the "outsider" through the provider
Fixes #26

marciocamello/restangular,hartz89/restangular,CandyLee198088/restangular,dshefchik/restangular,kevinrenskers/restangular,Nihaux/restangular,dokkis/restangular,scalp42/restangular,arabianfoz/restangular,matiomlei/restangular-1,hansottowirtz/restangular,idpaterson/restangular,jsdevel/restangular,chacbumbum/restangular,aychando/restangular,dankahle/restangular,zhengcongzhen/restangular,sesubash/restangular,cruiser/restangular,fernandomoraes/restangular,ackimwilliams/restangular,facingsouth/restangular,mgonto/restangular,mrahhal/restangular,xuwupeng2000/restangular,sergiocruz/restangular,janeyhjy/restangular,rodrigomf24/restangular,duxet/restangular,Akallabet/restangular,bartzilla/restangular,yelmontaser/restangular