Improve the experience when connecting to an IoT Hub

[devigned]

It's not super intuitive how one would connect to an IoT Hub with this library and should be super simple.

See also: #96

[R290]

~~For reference, I've made a Telegraf input plugin which is meant to connect to Azure IoT Hub using this library: https://github.com/R290/telegraf/tree/eventhub/plugins/inputs/eventhub~~ Now known as eventhub_consumer, part of the official Telegraf release.

The required connection string can be found here: https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-messages-read-builtin#read-from-the-built-in-endpoint (the connection string starts with Endpoint=sb://)

[crablab]

👋 Came to this from #96. As far as I can see, this issue still exists 😞

Looks like this functionality isn't really being maintained or supported at the moment so we'll look at another way to do this.