/docs/history: add important events from 2016
https://reproducible-builds.org/docs/history/ should be updated to include important events (eg the summit) and developments and achievements from 2016, covering the various projects working on R-B.
https://reproducible-builds.org/docs/history/ should be updated to include important events (eg the summit) and developments and achievements from 2016, covering the various projects working on R-B.