added a id#getClassName() function. also added comments.
added a id#getClassName() function. also added comments.

mralexgray/NodObjC,jerson/NodObjC,jerson/NodObjC,TooTallNate/NodObjC,jerson/NodObjC,telerik/NodObjC,telerik/NodObjC,TooTallNate/NodObjC,mralexgray/NodObjC