Fixed typos and added example for can.Observe.keys
Fixed typos and added example for can.Observe.keys

ackl/canjs,dispatchrabbi/canjs,rasjani/canjs,thomblake/canjs,jebaird/canjs,cohuman/canjs,jebaird/canjs,rasjani/canjs,beno/canjs,beno/canjs,bitovi/canjs,airhadoken/canjs,whitecolor/canjs,asavoy/canjs,thecountofzero/canjs,bitovi/canjs,ackl/canjs,gsmeets/canjs,jebaird/canjs,thomblake/canjs,Psykoral/canjs,mindscratch/canjs,bitovi/canjs,Psykoral/canjs,juristr/canjs,mindscratch/canjs,sporto/canjs,rjgotten/canjs,shiftplanning/canjs,whitecolor/canjs,rjgotten/canjs,shiftplanning/canjs,tracer99/canjs,WearyMonkey/canjs,ackl/canjs,yusufsafak/canjs,schmod/canjs,dispatchrabbi/canjs,janza/canjs,UXsree/canjs,scorphus/canjs,Psykoral/canjs,schmod/canjs,rasjani/canjs,sporto/canjs,airhadoken/canjs,sporto/canjs,azazel75/canjs,asavoy/canjs,thecountofzero/canjs,bitovi/canjs,beno/canjs,gsmeets/canjs,rjgotten/canjs,rasjani/canjs,yusufsafak/canjs,juristr/canjs,patrick-steele-idem/canjs,tracer99/canjs,UXsree/canjs,patrick-steele-idem/canjs,azazel75/canjs,gsmeets/canjs,schmod/canjs,scorphus/canjs,Psykoral/canjs,patrick-steele-idem/canjs,whitecolor/canjs,WearyMonkey/canjs,rjgotten/canjs,janza/canjs,WearyMonkey/canjs,cohuman/canjs,tracer99/canjs,cohuman/canjs