Configuring Sencha Touch

Sencha Touch is a JavaScript-based MVC framework used to build cross-platform mobile apps. It's a proprietary framework but free for open source projects, so we'll use it for our to-do app. To get and configure it, follow these instructions:

1. First we will download Sencha Touch:
   1. Open https://www.sencha.com/products/touch/ in your browser.
   2. Click on DOWNLOAD FOR FREE.
   3. Fill out the contact form and click on DOWNLOAD TOUCH.
   4. Check your e-mail for a link to download Sencha Touch.
   5. In the e-mail, click on Download Sencha Touch.
   6. After the download is complete, extract the ZIP in its own folder.
   7. Open this folder (it should be named touch-2.4.1 or similar).
2. Install Sencha Cmd:
   1. Open https://www.sencha.com/products/extjs/cmd-download/ in your browser.
   2. Click on DOWNLOAD WITHOUT JRE INCLUDED.
   3. Once the download is complete, run the setup application.
   4. Accept all defaults and click on Install.
   5. Once the installation is complete, click on Finish.
3. Install Ruby:
   1. Mac OS X: Ruby is preinstalled...