Add link to Github on site.
Only fire onLegEnd callbacks if the leg is visible.
Fix site demo css for code button.
Merge pull request #13 from joshuajabbour/10-onLegEnd-multiple

Only fire onLegEnd callbacks if the leg is visible [PR].
Merge pull request #11 from joshuajabbour/patch-1

Add link to Github on site.
Store original element in Leg object.
Add original bus and leg classes to constructed leg elements.
Compile javascript.