add manual cert locations preamble

setup.sh

@@ -223,6 +223,10 @@ fi
 
 # only process manual certificate paths if NOT using Certbot
 if [ "${useCertbot}" -eq 0 ]; then
+    echo -e "\n${mag}NGINX requires the full paths to your PEM formatted certificates, private keys"
+    echo "and your CA-chain in order to serve pages securely and properly over SSL."
+    echo "If you haven't generated/copied your certificates yet, you can enter the"
+    echo "paths where they will be located and confirm when prompted by the script."
     # not using Certbot: get location of certificate
     while true; do
         read -p "What is the path to your primary SSL certificate? " inputCertPath