added option to auto Download dialog package and updated zp-install.run

install.sh

@@ -1,7 +1,14 @@
 #!/bin/bash
 if ! hash dialog 2>/dev/null; then
     echo "dialog is not installed"
-    exit
+	while true; do
+		read -p "install from apt? (y/n) " yn
+		case $yn in
+			[Yy]* ) sudo apt install dialog || echo "dialog install failed"; break;;
+			[Nn]* ) echo "exiting zpower installer"; exit;;
+			* ) echo "please answer Y/n only.";;
+		esac
+	done
 fi
 
 working() {
@@ -48,11 +55,11 @@ do
 	esac
 done
 
-# Update/upgrade ubuntu repos
-echo "Updating Ubuntu repos..."
+# Update/upgrade repos
+echo "Updating repos..."
 sudo apt -qq update -y && sudo apt -qq upgrade -y || echo "apt update failed"
 
-# Install packages from Ubuntu repos
+# Install packages from repos
 if [ $zse -eq 1 ]; then
 	sudo apt -qq install -y curl git zsh tmux powerline || echo "apt install failed"
 else