BUG: make html tooltips work in ipython notebook
Merge pull request #56 from aflaxman/html_tooltip_in_notebook

BUG: make html tooltips work in ipython notebook
BUG: update __all__ in mpld3.plugins
specify IPython version required in enable_notebook
Merge remote-tracking branch 'origin/master' into wwwdoc
DOC: adjust website build for more natural examples scripts