Added jdblischak's testing content from 2013-06-chicago

Added jdblischak's testing content from 2013-06-chicago

W. Trevor King: The provenance for this commit is unclear from the Git
history alone, so I asked Will directly about Example2dnasequences.md.
He responded with:

On Fri, Nov 01, 2013 at 06:31:27PM -0400, Will Trimble wrote:
> The file you ask about by name is the tail end of the file
> https://github.com/jdblischak/boot-camps/blob/2013-06-chicago/09-testing/Readme.md
> It looks like it was written 2013-06-13.
>
> It was a perhaps-misguided attempt to factorize the Fibionacci example from
> the bio-inflected example of John's.
>
> This half-module on TDD exists in addition to three other edits of the
> testing module:  https://github.com/swcarpentry/bc/issues/106  (on
> ecological, one basic stats, one Fibonacci that John replaced)