[dev] [patch] Add how to install framework packages in INSTALL

[Marko Djukic]

committed, with a couple of tweaks and an extra note about windows.

thanks,

marko

Quoting "Jason M. Felice" <jfelice at cronosys.com>:

> * Assumes that framework/ will be distributed in Horde tarball.
> * Additions are in reStructuredText, although I didn't convert the document.
>
> Patch Summary:
>
>     -2   +11   INSTALL
>