ReOrg Install Guide

Created clearer separation between Community and Enterprise
installation instructions.
Reformat earlier installation instructions

Fixed my own errors from the previous commit.
One more edit for getting-started

Added Nick's suggestions to the installation intructions.
Fix markdown
Merge pull request #2 from nickanderson/deb-fix3

Fix markdown
Update Getting-Started.Installation page

Final revisions based on Ted's comments
Getting-Started install guide

Corrected numbering system in packages
Merge pull request #108 from deb-cfengine/GettingStartedReOrg

ReOrg Install Guide