SSQA-65, add text about international phone numbers

smartapps/smartthings/notify-me-when.src/notify-me-when.groovy

@@ -49,6 +49,7 @@ preferences {
 	section("Via a push notification and/or an SMS message"){
         input("recipients", "contact", title: "Send notifications to") {
             input "phone", "phone", title: "Phone Number (for SMS, optional)", required: false
+            paragraph "If outside the US please make sure to enter the proper country code"
             input "pushAndPhone", "enum", title: "Both Push and SMS?", required: false, options: ["Yes", "No"]
         }
 	}