Updated readme, now adds an id to a trigger if it's not set, fixed options check for shaded headings with arrow top or bottom and fixed checks to see if arrowed overlays fit
Removed forced typography on content and binded the id of the overlay to triggerClickHandler
Centered close button and made trigger click event listener bubble the event
Fix for clicking on elements inside the trigger (for example icons) closing the overlay
Merge pull request #13 from Financial-Times/fixes

Updated readme, now adds an id to a trigger if it's not set, fixed optio...