add .gitignore
Add scripts/ and makefile

- adapt scripts/inputs/ to R user guide
Output in published/ from

- $ make convert
- $ make publish
add contributing info
change Python for R in make_config.py
copy http://nbviewer.ipython.org/gist/msund/403910de45e282d658fa to repo as pretty-r-ggplot2.ipynb
fix typo in make_config
copy Marianne's updates https://gist.github.com/mkcor/4d603e94727f4bddb79a
publish pretty-r-ggplot2 - sync with streambed
Merge pull request #9 from plotly/docs5.0-ready

Make the R user guide docs 5.0 ready