Document Tails Installer in Gentoo
Originally created by @sajolida on #11080 (Redmine)
While designing the assistant we didn’t really prepare it to document Tails Installer packages in other Linux distros (yeah!). Now it’s available in Gentoo and we should add it to the assistant:
https://mailman.boum.org/pipermail/tails-dev/2016-February/010224.html