Support recommended reconnection behaviour for the streaming APIs

[martindale]

We'll be using this library in multiple places in the future, we should support this (and make the contribution back to ntwitter upstream): http://dev.twitter.com/pages/user_streams_suggestions <-

[unusualbob]

Link should be https://dev.twitter.com/docs/streaming-apis/connecting#Best_practices

[unusualbob]

Possibly fixes this: https://github.com/horixon/immortal-ntwitter