Added my bio to the core team.

docs/internals/team.txt

@@ -499,6 +499,20 @@ Daniele Procida
     .. _Curtis Maloney: http://musings.tinbrain.net/blog/
     .. _smaller django apps: https://github.com/funkybob/
 
+`Markus Holtermann`_
+    Markus is a Master of Science student in Computer Science at `Technical
+    University of Berlin`_. He started working with Django in 2010 when he
+    joined the `ubuntuusers.de`_ web team to work on *Inyoka*. Markus made his
+    first contribution to the Django project during DjangoCon Europe 2013 in
+    Warsaw. He was the web team leader for the `EuroPython 2014 website`_.
+
+    Markus lives in Berlin, Germany.
+
+    .. _Markus Holtermann: https://github.com/MarkusH
+    .. _Technical University of Berlin: http://www.tu-berlin.de/
+    .. _ubuntuusers.de: http://ubuntuusers.de/
+    .. _EuroPython 2014 website: https://ep2014.europython.eu/
+
 Past team members
 =================