Add credits

Signed-off-by: Alex Vanin <alexey@nspcc.ru>

CREDITS.md

@@ -0,0 +1,20 @@
+# Credits
+
+In alphabetical order:
+
+- Alexey Vanin
+- Angira Kekteeva
+- Denis Kirillov
+- Evgeniy Kulikov
+- Pavel Korotkov
+- Roman Khimov
+
+# Contributors
+
+In chronological order:
+
+- Anatoly Bogatyrev
+- Stanislav Bogatyrev
+- Anastasia Prasolova
+- Leonard Liubich
+- Elizaveta Chichindaeva

README.md

@@ -538,3 +538,7 @@ File **eacl.json**:
 
 If enabled, Prometheus metrics are available at `/metrics/` path and Pprof at
 `/debug/pprof`.
+
+## Credits
+
+Please see [CREDITS](CREDITS.md) for details.