Update README.md

Author: dannypsnl

README.md

@@ -4,5 +4,9 @@
 
 ```sh
 sh ./replace.sh $your_project_name $your_github_id $your_name
+# or want to keep origin github_id and name
+sh ./replace.sh $your_project_name
+
+# commit
 rm ./replace.sh && git add . && git commit -m "rename"
 ```