Merge pull request #2 from jabbawookiees/master

Added Mac and Ubuntu instructions
Merge pull request #3 from jabbawookiees/nfs-shared-folders

Nfs shared folders
Made README.md a lot longer.
Updated ruby requirement.
Changed a header in the readme.
Fixed newline issue in readme.
Added a section about vagrant
Markdown bug in the last one. :(
Added some more vagrant commands.
Added puppet to the readme.
Moved some links around.
Merge pull request #4 from jabbawookiees/update-readme

Made README.md a lot longer.