examples: Externalize configuration values and allow for multiple environments

In order to more easily manage testing of various order types as well as production, development etc. environments, externalize this config values.

Signed-off-by: Herman van Hazendonk <github.com@herrie.org>

examples/save-bank-keys.js

@@ -3,15 +3,9 @@
 'use strict';
 
 const ebics = require('../index');
+const configjs = require('./config.js');
 
-const client = new ebics.Client({
-	url: 'https://ebics.server',
-	partnerId: '',
-	userId: '',
-	hostId: '',
-	passphrase: 'test', // keys-test will be decrypted with this passphrase
-	keyStorage: ebics.fsKeysStorage('./keys-test'),
-});
+const client = gClient;
 
 // Client keys must be already generated and send by letter.
 // The bank should have enabled the user