Converted README to Markdown

For a better look.

Before:

![2013-05-31 13 52 36](https://f.cloud.github.com/assets/1831620/590173/4662d03c-c9d8-11e2-90e5-1bb1c104d464.png)

After:

![2013-05-31 13 53 05](https://f.cloud.github.com/assets/1831620/590175/4f808ce0-c9d8-11e2-89f0-20cbbea5e36a.png)