Add addendum clarifying interpretation of factor #2

In this version, an addendum containing a caveat about the choice of denomination for factor #2. Also, the Methods section has been changed to reflect the fact that ballots without the value “1” are possible.

Initial release

This is the first release of my study “Statistical analysis of the Debian General Resolution Init systems and systemd 2019.” It can be read in https://github.com/rlaboiss/debian-gr-systemd-2019/blob/master/README.org