Currently %html content isn't persisted in the notebook file (unlike %table content). This prevents many of the good plotting options from working, since you can't share the plots without them re-running the notebook.
Is it possible to change this behavior? PS. Here's an example of what I'm doing with Lightning plots, but I'm doing it in Zeppelin http://nbviewer.jupyter.org/urls/gist.githubusercontent.com/chilang/98326ad26192580e0630/raw/8f8888cbccc1d2e8348ec9f3d9e736c192be0fc0/Lightning%2520viz.ipynb )