Should the sample app be a little simpler? Right now, the first thing a user is going to do is delete a bunch of stuff out the index file, like commented out code and some unused nodes. Also the duck model isn't part of the sample folder, so nothing would show up anyway if they tried to load it as is. 

It seems like it should just have a single 3d node (probably not even a collada model, so that doesn't have to be copied around too), so they can see that it works as is.