Set display name (#117)

* JAMBONES_MYSQL_PORT env added

* set display name from header

* remove double quotes

lib/call-session.js

@@ -23,6 +23,9 @@ const createBLegFromHeader = (req, teams) => {
     user = req.get('X-Preferred-From-User') || user;
     host = req.get('X-Preferred-From-Host') || host;
   }
+  if (from.name) {
+    return `${from.name} <sip:${user}@${host}>`;
+  }
   return `sip:${user}@${host}`;
 };
 const createBLegToHeader = (req, teams) => {