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
Merge pull request #1 from ptone/readme-improvements

Thanks.
Merging changes to README.md from ec153e80
Merge pull request #2 from gvwilson/gh-pages

Importing lesson material.
Merge pull request #4 from gvwilson/gh-pages

Switching to redcarpet for rendering.
Merge branch 'master' of github.com:swcarpentry/bc into gh-pages
Merge branch 'gh-pages' of github.com:swcarpentry/bc into gh-pages
Merge pull request #10 from ptone/illustrated-readme

Add images and modify readme accordingly
Merge branch 'gh-pages' of github.com:swcarpentry/bc into gh-pages
Merge pull request #13 from jdblischak/r-setup-instructions

Created installation instructions for R and RStudio.
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
Merge pull request #17 from douglatornell/typos

Fix typo.
Merge pull request #16 from douglatornell/setup-check

Import installation test scripts from boot-camps repo.
Merge branch 'gh-pages' of github.com:swcarpentry/bc into gh-pages
Merge pull request #22 from gvwilson/gh-pages

Explaining that 'registration' is just an enumeration