Redesigned script structure

https://github.com/cferdinandi/kraken/issues/38
Redesigned script structure

https://github.com/cferdinandi/kraken/issues/38
added animateScroll to public methods
Updated documentation
New API exposes additional methods for use in your own scripts.
New API exposes additional methods for use in your own scripts.
Launched version 4
Merge branch 'init-5'