Install firefox nightly on ubuntu/mint
for the nightly builds of firefox do the following:
- just include the following ppa:
$ sudo add-apt-repository ppa:ubuntu-mozilla-daily/ppa
- update and install the package, called firefox-trunk
source: support.mozilla.org
for the firefox-next install see: https://itgrenade.wordpress.com/2016/07/11/install-firefox-beta-on-mint-ubuntu-debian-etc/