Move some of the patterns from the MA demo to the tulito library.

[dannybrian]

The index.js in the MA demo implements several patterns that would be useful to tulito proper. I don't want to abstract too far, but a bit more would have made the demo easier. Still, I haven't decided if any of these ideas are good ones yet.

• Implement a standard .cascade behavior?
• Add a data-tulito- attribute to provide transitionend behavior?
• Chainable timers to avoid all the nested timeout blocks?
• Make standard the "next-block" behaviors?