Update for suggestions made at typpo/textbelt pull request #94

lib/text.js

@@ -75,15 +75,10 @@ function sendText(phone, message, carrier, region, cb) {
       obj - object of config properties to be overriden
 */
 function setConfig(obj) {
-  for (var prop in obj) {
-    if (obj.hasOwnProperty(prop)) {
-      config[prop] = obj[prop];
-    } 
-  }
+  config = Object.assign(config, obj);
 }
 
 module.exports = {
   send:       sendText,     // Send a text message
-  // debug:      debug,     No longer needed, see setConfig and config.js
   config:     setConfig     // Override default config
 };