Update readme

README.md

-# RT Links Maubot
-A [maubot](https://github.com/maubot/maubot) that sends clickable markdown formatted links when it sees RT ticket numbers in a given format.
+# RT Maubot
+A [maubot](https://github.com/maubot/maubot) that sends markdown formatted links when it sees RT ticket numbers in a given format and provides an interface to RequestTracker4.
 
 ## Usage
 - `rt123456` - Responds with `[123456](https://rt.phys.ethz.ch/rt/Ticket/Display.html?id=123456)`
 - `!rt` - Show the help
-
-```
-Usage: !rt <subcommand> [...]
-
-    properties <ticket number> - Show all ticket properties.
-    resolve <ticket number> - Mark the ticket as resolved.
-    open <ticket number> - Mark the ticket as open.
-    stall <ticket number> - Mark the ticket as stalled.
-    delete <ticket number> - Mark the ticket as deleted.
-    autoresolve - Enable automatic ticket resolve mode.
-    comment <ticket number> <comment text> - Add a comment.
-    history <ticket number> - Get a list of all history items for a given ticket.
-    entry <ticket number> <history entry number> - Gets the history information for a single history entry.
-    last <ticket number> - Gets the history information for the last history entry.
-    show <ticket number> - Show all information about the ticket.
-```