Update README.md

Author: devotox

README.md

@@ -3,7 +3,7 @@ Watches nginx directory and reloads nginx server on file change
 
 
 ### Install
-`wget https://raw.githubusercontent.com/devotox/nginx-watch/master/nginx-watch.sh -O /usr/bin/nginx-watch && chmod +x /usr/bin/nginx-watch`
+`sudo wget https://raw.githubusercontent.com/devotox/nginx-watch/master/nginx-watch.sh -O /usr/bin/nginx-watch && chmod +x /usr/bin/nginx-watch`
 
 ### Run
-`nginx-watch`
+`sudo nginx-watch`