Option 'wSCarousel'

 - Added option „wSCarousel“
 - updatePagination doesn’t remove the next-button on last-item if
wSCarousel === true
 - goTo goes to first slide if triggered on last-slide
 - CSS-animations work along and give a nice visual feedback
Merge pull request #1 from felics/carousel

Have the option to have the slider behave like a (one-way)-carousel