Add shepherd-active class to body when a tour is active
Add showCancelLink option
Add data step attribute on body
Flip top/bottom to correct declarations
Fix theme styles to work with the new cancel link
Fix welcome example to work with the new cancel link and body active class
Expose the active and inactive events
Rebuild
Merge pull request #8 from HubSpot/exit

Add an option to include a link at the top of each step