Update documentation of command-line interface

README.md

@@ -7,13 +7,26 @@ client implementation of the low level protocol based on Python
 asyncio. It is fully asynchronous, including using the async command
 feature of the mpv interface, so commands can be interleaved.
 
+Enjoy! :notes:
+
+## Command-line interface
+
+[`mpvasync.py`](mpvasync.py) can be used as a command line tool to:
+
+* Toggle pause status
+* Load files to play
+* Show the playlist
+* Get and set *any* mpv property by name (set only for writable
+  properties)
+* Monitor mpv events
+
+See `mpvasync.py -h` for details. You can install the package from
+source using `pip install .`, which will give you the `mpvasync`
+command.
+
+## Python API
+
 The Python API is very limited for now, you pass in command strings
 (as defined in the mpv IPC documentation) and possibly arguments, and
 get back the data structure returned by mpv, already parsed from
 JSON. `mpvasync.MpvError` is raised if a command returns an error.
-
-[`mpvasync.py`](mpvasync.py) can be used as a command line tool that
-can toggle the pause status, and change or show the playlist. See
-`mpvasync.py -h` for details.
-
-Enjoy! :notes: