Updated content to conform to README best practices template

Before alterations, this content was the module author-determined
description of and instructions for use of the module.

As part of a joint Forge/Docs team effort to standardize formatting and
encourage quality module documentation, a best practices README
template was created via internal and external user testing. That
template was then applied to this module.

I pulled in content from the original README on GitHub. Standard
headings were added (Overview, Module Description, Setup, Usage,
Implementation, etc.) to organize content, existent content was moved
under its appropriate heading and edited for tone/flow/clarity, links
to outside documentation were updated, and basic formatting was done to
adhere to template standards.
Update for Debian 6 and up

Like Ubuntu, Debian 6 and higher have bundled libopenssl-ruby into libruby.
Setup testing using puppetlabs_spec_helper
Add tests
Fix template deprecation warnings generated in puppet 3
Merge pull request #19 from laurenrother/master

Updated content to conform to README best practices template
Merge pull request #25 from ecbypi/adding-tests

Adding tests
Update the apache2 module dependency
Merge pull request #27 from BioIQ/fix-temp-deprecations

Fix template deprecation warnings generated in puppet 3
Merge pull request #21 from inkblot/update-debian-libruby

Update for Debian 6 and up
Merge pull request #29 from MESHMD/update-apache2-dependency

Update the apache2 module dependency