Rasa Custom UI Updates

[Ajinkz]

@JiteshGaikwad thanks for your work. but still confused what things we can do using buttons

What are the possible things we can do with buttons?

@Juste @akelad @souvikg10 @amn41 Apart from payload, image what else could we have under buttons ? Did it support file(txt, pdf, docx,etc) or links ? How to decide what should happen after user clicks button?