Replace AUTHORS.md by an updated MAINTAINERS.md

AUTHORS.md

-The Prometheus project was started by Matt T. Proud (emeritus) and
-Julius Volz in 2012.
-
-Maintainers of this repository:
-
-* Brian Brazil <brian.brazil@boxever.com>
-* Johannes 'fish' Ziemke <github@freigeist.org>
-* Tobias Schmidt <tobidt@gmail.com>
-
-The following individuals have contributed code to this repository
-(listed in alphabetical order):
-
-* Alexey Palazhchenko <alexey.palazhchenko@gmail.com>
-* Alexis Letessier
-* Benjamin Staffin <benley@gmail.com>
-* Björn Rabenstein <beorn@soundcloud.com>
-* Brian Brazil <brian.brazil@boxever.com>
-* Christian Schwarz
-* Corey Stewart <stewa169@purdue.edu>
-* Daniel Speichert <daniel@speichert.pro>
-* Ed Schouten <ed@kumina.nl>
-* Eric Ripa
-* Fabian Reinartz <fabian@soundcloud.com>
-* Franklin Wise <franklin@krave.io>
-* Ian Hansen
-* Ilia Choly <ilia.choly@gmail.com>
-* Jari Takkala <jtakkala@gmail.com>
-* Joe Handzik <joseph.t.handzik@hpe.com>
-* Johannes 'fish' Ziemke <github@freigeist.org>
-* Jonas Große Sundrup <cherti@letopolis.de>
-* Julius Volz <julius.volz@gmail.com>
-* Ken Herner <ken@modulus.io>
-* Matt Layher <mdlayher@gmail.com>
-* Matthias Rampke <matthias@rampke.de>
-* Robert Clark <robert.d.clark@hpe.com>
-* Siavash Safi <siavash.safi@gmail.com>
-* Stephen Shirley <kormat@gmail.com>
-* Steve Durrheimer <s.durrheimer@gmail.com>
-* Thorhallur Sverrisson <toti@toti.is>
-* Tobias Schmidt <tobidt@gmail.com>
-* Will Rouesnel <w.rouesnel@gmail.com>

CONTRIBUTING.md

@@ -2,9 +2,9 @@
 Prometheus uses GitHub to manage reviews of pull requests.
-* If you have a trivial fix or improvement, go ahead and create a pull
-  request, addressing (with `@...`) one or more of the maintainers
-  (see [AUTHORS.md](AUTHORS.md)) in the description of the pull request.
+* If you have a trivial fix or improvement, go ahead and create a pull request,
+  addressing (with `@...`) the maintainer of this repository (see
+  [MAINTAINERS.md](MAINTAINERS.md)) in the description of the pull request.
 * If you plan to do something more involved, first discuss your ideas
   on our [mailing list](https://groups.google.com/forum/?fromgroups#!forum/prometheus-developers).

MAINTAINERS.md

+* Ben Kochie <superq@gmail.com>
+* Johannes 'fish' Ziemke <github@freigeist.org>