fix(node v4): solving issue with node v4 incompatibility,

Author: ar4mirez

lib/index.js

@@ -3,21 +3,19 @@
 const Aws = require('aws-sdk');
 const Async = require('async');
 const Joi = require('joi');
+const Hoek = require('hoek');
 const Schemas = require('./schemas');
 
 const validateOptions = {
     abortEarly: false
 };
 
-exports.register = function (server, options = {}, next) {
+exports.register = function (server, options, next) {
 
-    if (!options.global) {
-        return next(new Error('[options.global] must be present.'));
-    }
-
-    if (!options.services) {
-        return next(new Error('[options.services] must be present.'));
-    }
+    options = Hoek.applyToDefaults({
+        global: {},
+        services: []
+    }, options);
 
     Async.auto({
         globalConfig: (callback) => {

test/index.js

@@ -49,32 +49,6 @@ lab.describe('Plugin Registration', () => {
         });
     });
 
-    lab.it('it returns an error if no global config were passed.', (done) => {
-
-        register({}, (error) => {
-
-            Code.expect(error).to.exist();
-
-            return done();
-        });
-    });
-
-    lab.it('it returns an error if no services config were passed.', (done) => {
-
-        register({
-            global: {
-                accessKeyId: 'anything',
-                secretAccessKey: 'anything',
-                region: 'anything'
-            }
-        }, (error) => {
-
-            Code.expect(error).to.exist();
-
-            return done();
-        });
-    });
-
     lab.it('it returns error if wrong formed service is passed.', (done) => {
 
         register({