Installing on Cloud9
Cloud9 provides you with a free development environment with everything you need preinstalled.[8] To sign up, all you need is an email address or a GitHub account (see the following screenshot).
Next, you need to create a workspace. Be sure to click the Ruby template, as shown in the following screenshot.
Cloud9 helpfully creates an initial Rails project for you. On the left is a list of files and folders. If you click a file, you see its contents in the pane at the top right. At the bottom is a window where you can enter ...
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