Update README.md

diff --git a/README.md b/README.md
index 590b4118e66e06e705145365291cfca14249067a..65c71b30d15cf967a05aa451cab32a341198fd87 100644 (file)
--- a/README.md
+++ b/README.md
@@ -63,6 +63,8 @@ var AllF = map[string]bool{
 git clone https://github.com/qydysky/bili_danmu.git
 cd demo
 go run main.go
+或
+go run main.go -r=此处填房间ID
 ```
 以下内容可能过时，以实际运行为准
 ```