[Evolution] Installation page for the Evolution wiki

[Andrew Beverley <andy andybev com>]

Dear all,

I'd like to add an "installation" page to the Evolution wiki. Before I
do so, I wanted to check that I hadn't missed an existing one?

At this stage I only intend to add instructions on how to install
Evolution from source in Ubuntu, but of course more could follow.

If I hear nothing back, then I'll create a new page on the wiki at the
URL https://wiki.gnome.org/Apps/Evolution/Installation

Thanks,

Andy