Merge pull request #57 from calebhailey/master

Add version 0.9 and 0.10 back, w/ prompts to upgrade and links to 0.11 documentation
Add upgrade steps for upgrading a 0.10.x (or earlier) installation
Merge pull request #58 from kdaniels/master

Add upgrade steps for upgrading a 0.10.x (or earlier) installation
added link to upgrade from 0.9 / 0.10 pages