Added support of custom transport

[speedblue]

Allow to plug a custom remote backend (for example a backend with authentification)

[jharding]

In v0.10.0, I made it possible to define your own remote transport. So if you wanted to just web sockets for whatever reason, you could do something like:

var source = new Bloodhound({
  remote: {
    url: '/remote',
    send: function(url, o, onSuccess, onError) {
      // use websockets
      // onSuccess should be invoked with the suggestions
      // onError should be invoked if something went wrong
    }
  }
});

source.initialize();

$('.typeahead').typeahead(null, {
  source: source
});

FYI, I'm actually renaming send to transport in v0.10.1 (which should go out tomorrow).

Also, in my implementation, you'll still get rate limiting and caching for free.

Thanks for the pull request and I apologize it took me so long to address it.

[redox]

Awesome, thank you @jharding!