Support differently backed NSNumbers
Support differently backed NSNumbers

adronfan/RBBAnimation,robb/RBBAnimation,Farteen/RBBAnimation,liuzechen/RBBAnimation,mitchellporter/RBBAnimation,mitchellporter/RBBAnimation,liuzechen/RBBAnimation,Farteen/RBBAnimation,Farteen/RBBAnimation,adronfan/RBBAnimation,wearezeta/RBBAnimation