Add --rm flag when running dexy from docker.

To avoid having too many unused containers lying around.
DataProcessing introduction.
Create a dedicated DataProcessing notebook.

Add an explicit connection to the DataProcession session.
Merge branch 'master' of https://github.com/reproducible-research/scipy-tutorial-2014
Adding DataSharing notebook.

Based on the content of the DataSharing.md file.
Improved Formatting of 02-DataSharing.

Now showing the JSON structure as verbatim code, and using bold for the
references to buttons in the Figshare web pages.