Formatted the README.md file, and added some requests.

Hi Hector,

This is great, thanks for committing your code.

It would be great to make the code as user-friendly as possible. I've added some formatting to the README.md file so that it takes advantage of the Markdown display capabilities of GitHub - please use these from now on if you can.

If you accept this pull request the code should automatically implement these changes; or you can discuss them further here.

Thanks again, Tom