Some basic work on a config loader.

app/config.js

+const path = require('path');
+const fs = require('fs');
+const YAML = require('yaml');
+
+var CONFIG = null;
+var CONFIG_PATH = "";
+
+exports = {
+  get: function(){
+    if (arguments.length === 1 && typeof(arguments[0]) === 'string'){
+      if (CONFIG_PATH !== arguments[0]){
+        var cpath = path.normalize(arguments[0]);
+        if (!path.isAbsolute(cpath))
+          cpath = path.join(__dirname, cpath);
+        try {
+          CONFIG = YAML.parse(fs.readFileSync(cpath, 'utf8'));
+        } catch (e) {
+          console.log("ERROR: " + e.toString());
+        }
+      }
+    }
+    return CONFIG;
+  }
+};