[demos] added the "anim" demo
[demos] added the "anim" demo

alexjobs/deck.js-1,twitwi/deck.js,ProgRT/deck.js,alexjobs/deck.js-1,twitwi/deck.js,twitwi/deck.js,ProgRT/deck.js,ProgRT/deck.js,alexjobs/deck.js-1