improve readme

Author: ryecoaaron

README.md

@@ -8,9 +8,9 @@
 ### download script and execute
 - the wget option -O needs to be a capital letter 'O'
 - the second wget '-' has a space on both sides
-#### wget -O - https://github.com/OpenMediaVault-Plugin-Developers/installScript/raw/master/install | sudo bash
+#### sudo wget -O - https://github.com/OpenMediaVault-Plugin-Developers/installScript/raw/master/install | sudo bash
 #### -OR-
-#### curl -sSL https://github.com/OpenMediaVault-Plugin-Developers/installScript/raw/master/install | sudo bash
+#### sudo curl -sSL https://github.com/OpenMediaVault-Plugin-Developers/installScript/raw/master/install | sudo bash
 
 ### a detailed guide is available for this script as well
 https://forum.openmediavault.org/index.php/Thread/28789-Installing-OMV5-on-Raspberry-PI-s-Armbian-SBC-s-i386-32-bit-platforms/