Update doc/installation.md
Created by: dubcanada
Added phusion passenger as an installation option. I find it typically easier to work with (I find unicorn has a lot of issues with the upstream part) and I use it for all of my installations.
Created by: dubcanada
Added phusion passenger as an installation option. I find it typically easier to work with (I find unicorn has a lot of issues with the upstream part) and I use it for all of my installations.