Add a mock server

README.md

@@ -8,4 +8,21 @@ according to the meta information saved in the audio files. The audio files are
 expected to be in 2 directories, the artist and album directories. These
 directories are also renamed.
 
+## mock\_server.rb
+
+mock\_server.rb takes some JSON on its STDIN and starts a simple HTTP server that
+slowly (in chunks) answers all requests with the given input.
+
+For example:
+
+```sh
+echo '{"var": "stuff"}' | ./bin/mock_server.rb
+```
+
+and in another session:
+
+```
+curl localhost:8082
+```
+
 ## tea-cleaner