message: Update README for new ssurl
diff: @@ -99,7 +99,11 @@ List all available arguments with `-h`.
  ## Useful Tools
  -1. `ssurl` is for encoding and decoding ShadowSocks URLs. Example: `ss://YWVzLTI1Ni1jZmI6aGVsbG93b3JsZF9mdWNrQDEyNy4wLjAuMTo4Mzg4`
  +1. `ssurl` is for encoding and decoding ShadowSocks URLs (SIP002). Example:
  +
  +```plain
  +ss://YWVzLTI1Ni1jZmI6cGFzc3dvcmQ@127.0.0.1:8388/?plugin=obfs-local%3Bobfs%3Dhttp%3Bobfs-host%3Dwww.baidu.com
  +```
  ## Notes
  