Update storage in auth sample (#750)

Author: fhinkel

auth/auth.js

@@ -23,7 +23,7 @@
 function authCloudImplicit () {
   // [START auth_cloud_implicit]
   // Imports the Google Cloud client library.
-  const Storage = require('@google-cloud/storage');
+  const {Storage} = require('@google-cloud/storage');
 
   // Instantiates a client. If you don't specify credentials when constructing
   // the client, the client library will look for credentials in the
@@ -50,12 +50,13 @@ function authCloudImplicit () {
 function authCloudExplicit () {
   // [START auth_cloud_explicit]
   // Imports the Google Cloud client library.
-  const Storage = require('@google-cloud/storage');
+  const {Storage} = require('@google-cloud/storage');
 
   // Instantiates a client. Explicitly use service account credentials by
   // specifying the private key file. All clients in google-cloud-node have this
   // helper, see https://github.com/GoogleCloudPlatform/google-cloud-node/blob/master/docs/authentication.md
   const storage = new Storage({
+    projectId: 'project-id',
     keyFilename: '/path/to/keyfile.json'
   });
 

auth/package.json

@@ -17,7 +17,7 @@
     "test": "repo-tools test run --cmd ava -- -T 20s --verbose system-test/*.test.js"
   },
   "dependencies": {
-    "@google-cloud/storage": "1.6.0",
+    "@google-cloud/storage": "^2.0.3",
     "yargs": "11.0.0"
   },
   "devDependencies": {