Rewrite test/nsstring.js to use assert and be silent.
Rewrite test/nsstring.js to use assert and be silent.

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