build: update script

Author: harryplusplus

README.md

@@ -89,7 +89,7 @@ Please, see the script contents. always SECURITY! Copy to clipboard and Paste to
 
 __Linux__
 
-> sudo curl -sSL https://raw.githubusercontent.com/oneofthezombies/kill-tree/main/installs/linux.sh | sh
+> sudo curl -sSL https://raw.githubusercontent.com/oneofthezombies/kill-tree/main/installs/linux.sh | sudo sh
 
 Below is an example of sending `SIGTERM` signals to a process with process ID `777`, and to all child processes.  
 

installs/linux.sh

@@ -20,6 +20,8 @@ fi
 temp_dir=$(mktemp -d)
 cd $temp_dir
 
+echo "If required, please enter your password for sudo access..."
+
 curl -L -s https://api.github.com/repos/oneofthezombies/kill-tree/releases/latest | \
     grep "kill-tree-linux-x86_64" | \
     grep "browser_download_url" | \