mention they could use slack too

Author: mjrb

lib/constants.js

@@ -43,7 +43,7 @@ CONSTANTS = {
   TICKET_PANEL_LOCATION_PLACEHOLDER: "where are you?",
 
   TICKET_PANEL_CONTACT: "You can contact me through",
-  TICKET_PANEL_CONTACT_PLACEHOLDER: "phone number",
+  TICKET_PANEL_CONTACT_PLACEHOLDER: "phone number or slack",
 
   TICKET_PANEL_HELP: "Help me!",
   TICKET_PANEL_CANCEL: "Nevermind!",