Added help to readme

README.md

@@ -8,3 +8,11 @@ Usage:
 qproxy -l 0.0.0.0:8080 -t http://www.google.com
 ```
 
+```bash
+Usage of qproxy:
+  -l string
+    	Listen address
+  -t string
+    	Target address
+```
+