Update README.md

speechx/examples/ds2_ol/README.md

 # Deepspeech2 Streaming ASR
 
+## Examples
+
 * `websocket` - Streaming ASR with websocket.
 
 * `aishell` - Streaming Decoding under aishell dataset, for local WER test.
 
 ## More
-The below is for developing and offline testing:
+
+> The below is for developing and offline testing. Do not run it only if you know what it is.
 * nnet
 * feat
 * decoder