Provide scripts for installing and running txircd standalone

Since Ashton asked about this, I wrote a few scripts to make running txircd standalone a bit more convenient. It handles setting up the virtualenv and provides an easy way to start and stop the deamon. It assumes python2-virtualenv, as well as the requirements for the dependencies txircd uses (these being a C compiler for Twisted, python2-dev, libssl-dev and libyaml-dev), are already installed on the system.
Under normal circumstances it would be. Not sure how to deal with it being killed without the PID file being removed though. I need someone with more bash scripting knowledge.