Update nodemailer, yamljs, q

lib/config.js

@@ -59,7 +59,6 @@ var defaults = {
     },
     mail: {
         enabled: false,
-        transport: "SMTP",
         /* the key "config" is omitted because the format depends on the
            service the owner is configuring for nodemailer */
         "from-address": "some.user@gmail.com"
@@ -215,7 +214,6 @@ function preprocessConfig(cfg) {
 
     // Setup nodemailer
     cfg.mail.nodemailer = nodemailer.createTransport(
-        cfg.mail.transport,
         cfg.mail.config
     );