Frescobaldi on Mac installation instructions moved to Frescobaldi's wiki

[Davide Liessi]

Dear Frescobaldi & Mac users,

the installation instructions for Frescobaldi on Mac OS X have been
moved to Frescobaldi's wiki
(https://github.com/wbsoft/frescobaldi/wiki).

They have also been updated, as a consequence of a recent
reorganization of the Portfile for Poppler, so it is no longer
necessary to install Poppler separately before Frescobaldi.

You can find them at
- 
https://github.com/wbsoft/frescobaldi/wiki/How-to-install-Frescobaldi-on-Mac-OS-X
(English)
- 
https://github.com/wbsoft/frescobaldi/wiki/Comment-installer-Frescobaldi-sous-Mac-OS-X
(français)
- 
https://github.com/wbsoft/frescobaldi/wiki/Come-installare-Frescobaldi-in-Mac-OS-X
(italiano)

Best wishes.
Davide