Update README

[zatch3301]

This a chat application using R shiny package in which we can chat on a single chat room and it will allow multiple session as well.

[Swechhya]

@zatch3301 If no one is working on this I could try taking this up.

[Swechhya]

@zatch3301 Any pointers on what kind of info you want to update on README?

[zatch3301]

You can try running it on your end with or without docker and it's just a POC that we can create multiple user chat room with help of shiny sessions and can exchange a same data storage to multiple sessions with updated values which help us to achieve this chat room.