Prepare release 0.1

HISTORY.rst

+Release history
+===============
+
+0.1 (2020-08-11)
+----------------
+
+Initial Release

README.md

@@ -24,6 +24,13 @@
 rednerd -c config.ini serve
 ```
 
+## Documentation
+
+The API documentation is automatically published by the rednerd server, under
+the "/docs" path:
+
+    http://127.0.0.1:12345/docs
+
 ## User management
 
 The user management can be used to create a user, set its password and create