添加monitor.sh的使用方法

tools/monitor.sh

@@ -1,5 +1,8 @@
 #!/bin/sh
 
+# usage: monitor.sh "<the exe file's absolute path and its shell parameter>"
+# And then when ever the exe shutdonw it will be automatically restart
+
 exe=$1
 while true; do
 	state=`ps aux | grep "$1" | grep -v grep | grep -v $0`