Add linting.

.jshintrc

@@ -1,7 +1,15 @@
 {
-    "camelcase"     : true,
-    "indent"        : 2,
-    "strict"        : true,
-    "globalstrict"  : true,
-    "node"          : true
+  "camelcase" : true,
+  "curly": true,
+  "eqeqeq": true,
+  "globalstrict": true,
+  "indent": 2,
+  "newcap": true,
+  "maxlen": 80,
+  "node": true,
+  "quotmark": "single",
+  "strict": true,
+  "trailing": true,
+  "undef": true,
+  "unused": true
 }

.travis.yml

@@ -40,4 +40,4 @@ install:
 #Use '-q' to disable interactive prompts
 
 script:
-#Test and/or deploy your app with gcloud commands here!
+  - jshint --exclude-path=.gitignore .

cloud-storage/authSample.js

@@ -2,6 +2,7 @@
  * @fileoverview Sample code that grabs default credentials from the
  * environment, then uses it to make an api call.
  */
+'use strict';
 
 var google = require('googleapis');
 

package.json

@@ -14,6 +14,7 @@
   },
   "devDependencies": {
     "mocha": "~2.2.5",
+    "jshint": "~2.8.0",
     "lodash": "~3.10.1"
   },
   "repository": {

test/.jshintrc

@@ -0,0 +1,4 @@
+{
+  "extends": "../.jshintrc",
+  "mocha": true
+}

test/cloud-storage/testAuthSample.js

@@ -1,14 +1,15 @@
 /**
  * @fileoverview Tests for the list-buckets module.
  */
+'use strict';
 
-var assert = require("assert");
+var assert = require('assert');
 var _ = require('lodash');
 
-var authSample = require("../../cloud-storage/authSample");
+var authSample = require('../../cloud-storage/authSample');
 
 describe('listBuckets', function() {
-  it('returns a list of buckets', function (done) {
+  it('returns a list of buckets', function(done) {
     authSample.listBuckets(
         process.env.TEST_PROJECT_ID,
         function(error, success) {
@@ -17,7 +18,7 @@ describe('listBuckets', function() {
           } else {
             assert(success.items.length > 0);
             assert(_.find(success.items, function(item) {
-              return item.name == process.env.TEST_BUCKET_NAME;
+              return item.name === process.env.TEST_BUCKET_NAME;
             }));
             done();
           }