Initial DigitalOcean tutorial commit

packages/mail/USE_CASES.md

@@ -15,8 +15,9 @@ This documentation provides examples for specific email use cases. Please [open
   * [Specifying Time to Send At](#time-to-send)
   * [Specifying Custom Headers](#custom-headers)
   * [Specifying Categories](#categories)
+  * [Kitchen Sink - an example with all settings used](#kitchensink)
   * [Managing multiple API keys](#multipleapikeys)
-  * [Kitchen Sink - an example with all settings used](#kitchen-sink)
+* [Deploy a simple Hello Email app on Digital Ocean with Node.js](#digitaloceandeploy)  
 * [Deploy a Simple App on Google App Engine with Node.js](#gae)
 * [Deploy a Simple App on Heroku with Node.js](#heroku)
 * [How to Setup a Domain Whitelabel](#domain-white-label)
@@ -483,6 +484,129 @@ sgMail
   .catch(error => console.error(error.toString()));
 ```
 
+<a name="digitaloceandeploy"></a>
+# Deploy a simple Hello Email app on Digital Ocean with Node.js
+
+### Create a DigitalOcean droplet and install Node.js
+[This tutorial by DigitalOcean](https://www.digitalocean.com/community/tutorials/how-to-set-up-a-node-js-application-for-production-on-ubuntu-14-04#create-nodejs-application) walks through the process of setting up a Node.js application on Ubuntu. The tutorial will take a simplified, summarized approach.
+
+First, create a [DigitalOcean](https://www.digitalocean.com) droplet.  Then, login to your VPS from command line. Next, install Node.js.  The following commands are explained in detail in the aforementioned tutorial.
+```
+$ sudo apt-get update
+$ sudo apt-get install git
+$ cd ~
+$ wget [Insert Linux Binaries (.tar.xz) download link]
+$ mkdir node
+$ tar xvf node-v*.tar.?z --strip-components=1 -C ./node
+$ cd ~
+$ rm -rf node-v*
+$ mkdir node/etc
+$ echo 'prefix=/usr/local' > node/etc/npmrc
+$ sudo mv node /opt/
+$ sudo chown -R root: /opt/node
+$ sudo ln -s /opt/node/bin/node /usr/local/bin/node
+$ sudo ln -s /opt/node/bin/npm /usr/local/bin/npm
+```
+
+### Creating the repository
+Next, create a directory to house our Node.js application that will send email. The application will be housed in a directory located at /var/www/domain.com
+```
+$ cd /var
+$ mkdir www & cd www
+$ mkdir domain.com && cd domain.com
+```
+[This tutorial by DigitalOcean](https://www.digitalocean.com/community/tutorials/how-to-set-up-automatic-deployment-with-git-with-a-vps) walks through the process of setting up automatic deployment with git with a VPS.  Again, this tutorial will not go into the detail behind the commands but will provide a summary.
+
+```
+$ cd ~/var
+$ mkdir repo && cd repo
+$ mkdir site.git && cd site.git
+$ git init --bare
+$ cd hooks
+$ cat > post-receive
+```
+When you execute this command, you will have a blank line indicating that everything you type will be saved to this file. So let's type:
+```
+#!/bin/sh
+git --work-tree=/var/www/domain.com --git-dir=/var/repo/site.git checkout -f
+```
+When you finish typing, press 'control-d' to save. In order to execute the file, we need to set the proper permissions using:
+```
+$ chmod +x post-receive
+```
+Then exit and return to local machine
+```
+$ exit
+```
+
+### Create send email repo on local machine
+```
+$ cd /my/workspace
+$ mkdir project && cd project
+$ git init
+$ git remote add live ssh://user@mydomain.com/var/repo/site.git
+```
+
+Install package manager and SendGrid dependency. Interactively create a package.json file using
+```
+$ npm init
+```
+Then follow the prompts. Next, install the SendGrid mail dependency.
+```
+$ npm install --save @sendgrid/mail
+```
+Create an index.js file where we will save our Hello Email script
+```
+$ touch index.js
+```
+
+Insert Hello Email script into index.js
+```javascript
+const sgMail = require('@sendgrid/mail');
+sgMail.setApiKey(process.env.SENDGRID_API_KEY);
+const msg = {
+  to: 'test@example.com',
+  from: 'test@example.com',
+  subject: 'Sending with SendGrid is Fun',
+  text: 'and easy to do anywhere, even with Node.js',
+  html: '<strong>and easy to do anywhere, even with Node.js</strong>',
+};
+sgMail.send(msg);
+```
+
+Next, add a .gitignore file with your /node_modules.
+
+Then, push code to Digital Ocean
+```
+$ git add .
+$ git commit -m "My project is ready"
+$ git push live master
+  Counting objects: 7, done.Delta compression using up to 4 threads.Compressing objects: 100% (7/7), done.Writing objects: 100% (7/7), 10.56 KiB, done.Total 7 (delta 0), reused 0 (delta 0)To ssh://user@mydomain.com/var/repo/site.git* [new branch]      master -> master
+```
+
+### Final Setup on DigitalOcean
+
+Navigate to app directory on DigitalOcean
+```
+$ ssh root@[your-IP-address]
+$ cd /var/www/domain.com
+```
+
+Install dependencies and set API key.  Install dependencies on your DigitalOcean droplet.
+```
+$ npm install
+```
+Save your SendGrid API key as an environment variable.
+```
+$ export SENDGRID_API_KEY=[your-api-key]
+```
+
+Test that your app works
+```
+$ node index.js
+```
+
+=======
 <a name="gae"></a>
 ## Deploy a Simple App on Google App Engine with Node.js
 
@@ -594,3 +718,4 @@ Find more information about all of SendGrid's whitelabeling related documentatio
 You can find documentation for how to view your email statistics via the UI [here](https://app.sendgrid.com/statistics) and via API [here](https://github.com/sendgrid/sendgrid-nodejs/blob/master/packages/client/USAGE.md#stats).
 
 Alternatively, we can post events to a URL of your choice via our [Event Webhook](https://sendgrid.com/docs/API_Reference/Webhooks/event.html) about events that occur as SendGrid processes your email.
+