Reconnection logic example in readme

[hartlomiej]

Prerequisites

• Put an X between the brackets on this line if you have done all of the
  following:
  • Checked this feature isn't already filed: open features
  • Checked the feature request guidelines

Summary

Hey! I was thinking it would be great if someone more experienced than myself could code a nice general retry logic in case a steam disconnects and throws a TwitterError error. Would be cool to have it in README instead of "probably should have retry logic here" :)

Motivation

Well, my stream died a few times without me noticing ;) Also would useful when you restart an app and stream is already in use.

Describe alternatives you've considered

I've tried to implement something on my own but I've noticed sometimes the stream doesn't reconnect, so there must be something wrong with my approach. Would rather not post it. ;)