Initial Development

I put together a README and a basic project structure to get things started. @pushred take a look at the README and let me know if this is headed in the right direction.
This is too presentational.. if anything I'd like to have the label wrapped still, so I can potentially replace the text with an icon if I want while having the flexibility to not, or to prepend/append an icon instead. Also if you're going to aria tag this might as well [assign the alert role][1]?

[1]: https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/ARIA_Techniques/Using_the_alert_role