[ckan-dev] CKAN install instructions for OS X 10.7 Lion

[Sean Hammond]

> My Ubuntu blew up over the weekend (I think it may have been a corrupt
> Master Boot Record) so I had to move over to OS X and get a CKAN source
> install setup on it. I've added some more detailed instructions for Lion
> to the wiki:
> 
> http://wiki.ckan.org/Install
> 
> If you're running CKAN on OS X take a look and see if you can add
> anything. Getting PostgreSQL working was particularly tricky, there
> seems to be a problem with a version of postgres that comes preinstalled
> on Lion.

Also added instructions for Vagrant, potentially very handy sometimes!