message: Added 'selectedAppId' to the example config.json file
diff: "privateKeyPath": "/some/path/to/privatekey.pem",
  "userAgent": "Tester (PARTNER) - Application for testing Xero",
  "xeroPassword": "XXXXXXXXXX",
  - "xeroUsername": "foo@example.com"
  + "xeroUsername": "foo@example.com",
  + "selectedAppId" : "some-app-id"
  },
  "private": {
  "consumerKey": "AAAAAAAAAAAAAAAAAA",
  "consumerSecret": "BBBBBBBBBBBBBBBBBBBB",
  "userAgent": "Tester (PUBLIC) - Application for testing Xero",
  "xeroPassword": "XXXXXXXXXX",
  - "xeroUsername": "foo@example.com"
  + "xeroUsername": "foo@example.com",
  + "selectedAppId" : "some-app-id"
  }
  }
  \ No newline at end of file
  