remove old nbconvert
update style.min.css
update requirements
use nbconvert in IPython 1.0
nbconvert sphinx dependency
try buildpacks for pandoc

also did:

    heroku config:add BUILDPACK_URL=https://github.com/ddollar/heroku-buildpack-multi.git

    heroku config:set PATH=bin:/usr/local/bin:/usr/bin:/bin
vendor url
update bootstrap
use ipython.min.css

and override some pre formatting that's undesirable in basic html output
no-gevent
Merge pull request #102 from minrk/1.0

Update to use IPython 1.0