Feature: Should FreeBSD support be added?

[adiclepcea]

I have already tested the system on FreeBSD (after small modifications).
The idea is that it runs ok on FreeBSD and perhaps it would run the same on every unix.
To make the system easier to use I believe that we should call the setup switch for linux and freebsd: gnome instead of linux-gnome and separately freebsd-gnome.
Both Linux and FreeBSD are used with the Gnome desktop, thus both of them use the same commands (gsettings set and get) to setup the proxy.
By doing so, we can also unite the tests for linux and freebsd.
Being an radical change I decided it is better to ask for opinions.
Should I continue with the port?

[adiclepcea]

I've done the modifications. To view them please see #51