Docs don't show using threads in the code

[jimbobbennett]

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What are the steps to reproduce this issue?

1. Implement the code from https://docs.pycom.io/gettingstarted/programming/first-project.html

What happens?

This code is not running on a background thread, so can stop the PyCom device being updated if it is busy when you try to push new firmware. This advice was provided by @Xykon during an IoT Hack

What were you expecting to happen?

The code should run on a background thread