Run example notebooks so that GitHub shows results

[DaneWeber]

@martin-saurer - do you think you could run your example notebooks and commit those to the repo? I would expect doing so to make the GitHub views far more illustrative: https://github.com/martin-saurer/jkernel/blob/master/examples/Compare_Bitmap_Images.ipynb

I was about to link directly to one of your example notebooks in GitHub, but they don't show what Jupyter can do.

[martin-saurer]

@DaneWeber - Yes, it looks that GitHub's notebook viewer is working for J notebooks now. Not for all features (interactive HTML), but for most. So I updated the example notebooks showing the results.

[DaneWeber]

Thanks!