[DO NOT MERGE] Add Leftpad SDK Example

appengine/leftpad/app.js

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+// Copyright 2015-2016, 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';
+
+var express = require('express');
+var leftPadIOSDK = require('left-pad-io-sdk');
+
+var app = express();
+
+app.get('/', function(req, res) {
+    leftPadIOSDK.leftPad('dog', 10, '#').then(function(response){
+          console.log(response); // logs the response 
+          res.status(200).send('response');
+    })
+});
+
+// Start the server
+var server = app.listen(process.env.PORT || '8080', '0.0.0.0', function() {
+  console.log('App listening at http://%s:%s', server.address().address,
+
+    server.address().port);
+  console.log('Press Ctrl+C to quit.');
+});

appengine/leftpad/app.yaml

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+# Copyright 2015-2016, 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.
+
+# [START app_yaml]
+runtime: nodejs
+vm: true
+
+skip_files:
+  - ^(.*/)?.*/node_modules/.*$
+# [END app_yaml]

appengine/leftpad/package.json

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+{
+  "name": "appengine-hello-world",
+  "description": "Simple Hello World Node.js sample for Google App Engine",
+  "version": "0.0.1",
+  "private": true,
+  "license": "Apache Version 2.0",
+  "author": "Google Inc.",
+  "engines": {
+    "node": "~4.2"
+  },
+  "scripts": {
+    "start": "node app.js",
+    "monitor": "nodemon app.js",
+    "deploy": "gcloud preview app deploy"
+  },
+  "dependencies": {
+    "express": "^4.13.4",
+    "left-pad-io-js-sdk": "1.0.1"
+  }
+}