patch: added a bit more docs

README.md

@@ -26,7 +26,15 @@ The rest of this page is for developers of the jacdac-ts library.
 npm install -g jacdac-cli
 ```
 
-## Devtools
+## `jacdac parse`
+
+Parses a logic analyzer log and replays the packets
+
+```
+jacdac parse log.txt
+```
+
+## `jacdac devtools`
 
 Starts a local websocket server that acts as a bridge between a web dashboard and a client implementation. This allows to test a native client using the latest version of the web developer tools.