Added a new paragraph to the README introduction and organized links.

[ericleite]

I added a clear, easy-to-comprehend introduction for Backbone. I believe that having an introduction free of too many technical terms will quickly inform anyone about the use-cases, merit, and advantages of Backbone. Seasoned developers, new programmers, and even nontechnical visitors will benefit from the clear language, exposing Backbone to a broader range of users. Finally, I added some structure to list of links that followed the introduction. By adding headings, it will be easier for developers to find what they are looking for on this page.

[jashkenas]

Thanks for the structured list of links — that's useful. But all of the hyperbolic language isn't helpful. I have a very strong dislike for open source libraries that toot their own horn in terms of promises and positive adjectives. Let's keep that to a minimum. Leaving this open in case you want to mellow it down / factualize it.

[ericleite]

Appreciate the feedback - I cut the unnecessary lines, but kept the organization. Let me know if there's any other changes that should be made.