Move acknowledgements over to the documentation

docs/docs/features.rst

@@ -229,3 +229,13 @@ which understands many of Python's key features.
 By the way, I really tried to program it as understandable as possible. But I
 think understanding it might need quite some time, because of its recursive
 nature.
+
+Acknowledgements
+----------------
+
+- Thanks to all the contributors, see also the ``AUTHORS.txt``.
+- Takafumi Arakaki (@tkf) for creating a solid test environment and a lot of
+  other things.
+- Danilo Bargen (@dbrgn) for general housekeeping and being a good friend :).
+- Guido van Rossum (@gvanrossum) for creating the parser generator pgen2
+  (originally used in lib2to3).