Fix typos in novice Python lessons
Add reproducible workflow lesson
python/reproducible_workflow.md: Remove trailing whitespace
lessons/misc-reproducibility: Use new bc directory structure
lessons/misc-biopython/reproducible_workflow.md: Remove history-less content
updated lessons index with @jkitzes credit
Converting to triple-tildes in Markdown source files
Fixing formatting glitch in one Markdown file
Switching to triple-tilde in Markdown code blocks in IPython Notebooks
Typo fix: "on" -> "one".
Move style information to begin of lesson

In the Git lesson some black lines was add to  make the commands
more easy to read. This information is now in the begin of the
lesson.
Fix typo in image source
Fix typo of Markdown syntax
Adding contributing guidelines.

Includes license, workflow, and file formats sections.
Updating contributions description
Fix typos
Move existing guidelines README -> CONTRIBUTING
Update basic contributing workflow

W. Trevor King: I changed the checkout commands to:

  $ git checkout -b <new-branch> <remote-tracking-base>

following Git's user manual [1].  This should have no effect on the
actual results, but it's more likely to show up in other examples that
the students see.

[1]: https://www.kernel.org/pub/software/scm/git/docs/user-manual.html
Clean up materials from original CONTRIBUTING
README.md: Link to CONTRIBUTING.md

On Fri, Jan 10, 2014 at 09:55:53AM -0800, Aron Ahmadia wrote:
> My only suggestion is that we keep a link from the README back to
> CONTRIBUTING, so somebody skimming/searching the front page knows
> where to go next.

On Fri, Jan 10, 2014 at 10:31:04AM -0800, Justin Kitzes wrote:
> In response to @ahmadia comment, I would suggest removing the final
> sentence "Please submit corrections or additions as pull requests,
> bug reports, or by email to admin@software-carpentry.org." from the
> opening paragraph of the README and replacing it with "To contribute
> corrections or additions to this repository, see the contributing
> guidelines." with the appropriate link.