Update README

[JoeKarlsson]

Include the following:

• Title and description of your product
• Screenshots/video of your app being used
• Link to your deployed website and a link to the Chrome Store where it can be downloaded
• Team Credits, with links to your repos
• Team photo
• How is it used? Once it's up and running provide some very descriptive examples of usage.
• How can others help? Collaboration yields amazing software. Make it easy for others to get involved by letting them know how to submit new features, report issues, or offer other assistance.
• License information Don't forget to let others know what license your project is released under.

[JoeKarlsson]

@emortong @jhoun @tylernchls