Simplifying demo only using 1 slider & added new images.

Also included different panda images and deleted old number-less “panda
jpg”.
Adding secondary demo with 3 sliders at a time.
Added animate-overwrite.css to change default animations.

This commit changes the bounce animation so it’s smoother and less
“bouncy”.
Including animate-overwrite.css in example markup files.
Merge pull request #5 from TrueniTo/development

Adding new demo, images and overwriting bounce animation