Install PPS/ppstream on Ubuntu 12.04+

The official pps package doesn't seem to work on latest Ubuntu distributions. Here is a way to solve it.

http://thanhsiang.org/faqing/node/167

Just install the file attached here: https://carnet-classic.danielhan.dev/home/technical-tips/linux-unix/ubuntu/install-pps-ppstream-on-ubuntu-12-04.html