Add KMS quickstart.

kms/README.md

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+<img src="https://avatars2.githubusercontent.com/u/2810941?v=3&s=96" alt="Google Cloud Platform logo" title="Google Cloud Platform" align="right" height="96" width="96"/>
+
+# Google Cloud KMS API Node.js Samples
+
+The [Cloud KMS API][kms_docs] is a service that allows you to keep encryption
+keys centrally in the cloud, for direct use by cloud services.
+
+[kms_docs]: https://cloud.google.com/kms/docs/
+
+## Table of Contents
+
+* [Setup](#setup)
+* [Samples](#samples)
+  * [Quickstart](#quickstart)
+
+## Setup
+
+1. Read [Prerequisites][prereq] and [How to run a sample][run] first.
+1. Install dependencies:
+
+        npm install
+
+[prereq]: ../README.md#prerequisities
+[run]: ../README.md#how-to-run-a-sample
+
+## Samples
+
+### Quickstart
+
+View the [documentation][quickstart_docs] or the [source code][quickstart_code].
+
+Run the sample:
+
+    node quickstart.js
+
+[quickstart_docs]: https://cloud.google.com/kms/docs
+[quickstart_code]: hostedmodels.js

kms/package.json

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+{
+  "name": "nodejs-docs-samples-kms",
+  "version": "0.0.1",
+  "private": true,
+  "license": "Apache Version 2.0",
+  "author": "Google Inc.",
+  "scripts": {
+    "test": "cd ..; npm run st -- --verbose kms/system-test/*.test.js"
+  },
+  "dependencies": {
+    "googleapis": "16.1.0"
+  }
+}

kms/quickstart.js

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+/**
+ * Copyright 2017, Google, Inc.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+'use strict';
+
+// [START kms_quickstart]
+// Imports the Google APIs client library
+const google = require('googleapis');
+
+// Your Google Cloud Platform project ID
+const projectId = 'YOUR_PROJECT_ID';
+
+// The "global" zone will list all keys. It can be a specific zone if desired.
+const zone = 'global';
+
+// Acquires credentials
+google.auth.getApplicationDefault((err, authClient) => {
+  if (err) {
+    console.error('Failed to acquire credentials');
+    return;
+  }
+
+  if (authClient.createScopedRequired && authClient.createScopedRequired()) {
+    authClient = authClient.createScoped([
+      'https://www.googleapis.com/auth/cloud-platform'
+    ]);
+  }
+
+  // Instantiates an authorized client
+  const cloudkms = google.cloudkms({
+    version: 'v1beta1',
+    auth: authClient
+  });
+  const params = {
+    parent: `projects/${projectId}/locations/${zone}`
+  };
+
+  // Lists key rings
+  cloudkms.projects.locations.keyRings.list(params, (err, result) => {
+    if (err) {
+      console.error(err);
+      return;
+    }
+
+    const keyRings = result.keyRings || [];
+
+    if (keyRings.length) {
+      console.log('Key kings:');
+      result.keyRings.forEach((keyRing) => console.log(keyRing.name));
+    } else {
+      console.log(`No key rings found.`);
+    }
+  });
+});
+// [END kms_quickstart]

kms/system-test/quickstart.test.js

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+/**
+ * Copyright 2017, Google, Inc.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+'use strict';
+
+require(`../../system-test/_setup`);
+
+const proxyquire = require(`proxyquire`).noPreserveCache();
+const google = proxyquire(`googleapis`, {});
+
+function list (callback) {
+  google.auth.getApplicationDefault((err, authClient) => {
+    if (err) {
+      callback(err);
+      return;
+    }
+
+    if (authClient.createScopedRequired && authClient.createScopedRequired()) {
+      authClient = authClient.createScoped([
+        'https://www.googleapis.com/auth/cloud-platform'
+      ]);
+    }
+
+    const cloudkms = google.cloudkms({
+      version: 'v1beta1',
+      auth: authClient
+    });
+    const params = {
+      parent: `projects/${process.env.GCLOUD_PROJECT}/locations/global`
+    };
+
+    cloudkms.projects.locations.keyRings.list(params, callback);
+  });
+}
+
+test.beforeEach(stubConsole);
+test.afterEach.always(restoreConsole);
+
+test.cb(`should list key rings`, (t) => {
+  const googleapisMock = {
+    cloudkms () {
+      return {
+        projects: {
+          locations: {
+            keyRings: {
+              list (params, callback) {
+                list((err, result) => {
+                  if (err) {
+                    t.end(err);
+                    return;
+                  }
+                  callback(err, result);
+
+                  setTimeout(() => {
+                    try {
+                      t.true(console.log.called);
+                      if (result && result.keyRings && result.keyRings.length) {
+                        t.deepEqual(console.log.getCall(0).args, [`Key rings:`]);
+                      } else {
+                        t.deepEqual(console.log.getCall(0).args, [`No key rings found.`]);
+                      }
+                      t.end();
+                    } catch (err) {
+                      t.end(err);
+                    }
+                  }, 200);
+                });
+              }
+            }
+          }
+        }
+      };
+    }
+  };
+
+  proxyquire(`../quickstart`, {
+    'googleapis': googleapisMock
+  });
+});