update readme

speechx/examples/ds2_ol/README.md

@@ -2,13 +2,5 @@
 
 ## Examples
 
-* `websocket` - Streaming ASR with websocket.
-
-* `aishell` - Streaming Decoding under aishell dataset, for local WER test.
+* `websocket` - Streaming ASR with websocket for deepspeech2_aishell.    
+* `aishell` - Streaming Decoding under aishell dataset, for local WER test.    
\ No newline at end of file
-
-## More
-
-> The below is for developing and offline testing. Do not run it only if you know what it is.
-* nnet
-* feat
-* decoder