Now that the project is finding a little adoption it is really high time
to bring some tests into the code to ensure everything works as it
should.
This first version will only provide a simple test harness from which
tests can slowly be written for other parts of the program.
Switched sections for dependencies and installation around and created
better sub-headings.
Added section on installing packaged AUR version, thanks to @firegem for
packaging it!
Fixed some whitespace on line endings.
Closes #6.
