swc-installation-test.py: Add installation-testing script

The content of this script was posted by Greg Wilson and attributed to
Konrad Hinsen [1].

[1]: https://github.com/swcarpentry/website/issues/38#issuecomment-11189525
workshop_checklist.py: Add installation-testing script

This script was linked to by Eric Bray [1] and hosted on Fernando
Perez's website [2].

[1]: https://github.com/swcarpentry/website/issues/38#issuecomment-11386945
[2]: http://fperez.org/py4science/workshop_checklist.py
Merge Konrad Hinsen and Fernando Perez's installation-testing scripts
Initial commit
Initializing template for Software Carpentry bootcamp home pages.
Cleaning up description of how to create bootcamp home page, and bringing files into sync with revised description.
Fixing links in index file to lesson material
Merging changes to README.md from ec153e80
Merge branch 'master' of github.com:swcarpentry/bc into gh-pages
Merge branch 'gh-pages' of github.com:swcarpentry/bc into gh-pages
Adding links to reference guides to home page
Merge branch 'badge-updates' of github.com:ptone/bc into badge-updates
Merge pull request #14 from ptone/badge-updates

Updated badges
Merge branch 'gh-pages' of github.com:swcarpentry/bc into gh-pages
Putting note in index page explaining purpose.
More instructions on bootcamp home page template.
Adding a note about countries to template files
Merge pull request #7 from tshauck/set-difference

Add set difference exercise
Merge scopatz 'flow-cont' PR 21
Merge scopatz 'vars-types' PR 18