[Proj] grid shift file installation on ubuntu

[Bryan Keith]

> Well, here's the problem:
>
> https://bugs.launchpad.net/ubuntu/+source/proj/+bug/368065

In the above link that I posted is a reference to the ubuntugis packages
which include the correct grid shift files.  Here's that link:

https://launchpad.net/~ubuntugis/+archive/ubuntugis-unstable

I followed the instructions on this page to install the proj package from
there, and now everything is working as I expect it to.

Bryan