Add comments to ivar.js.
Add comments to ivar.js.

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