To get the prerequisites on a a fresh Ubuntu LTS 16.04 run:
- [sudo] apt-get install python3-dev python3-pip python3-psycopg2 python3-tidylib phpunit
+ [sudo] apt-get install python3-dev python3-pip python3-psycopg2 python3-tidylib phpunit php-cgi
pip3 install --user behave nose