Added documentation/examples for how to refresh an expired token

helpscout / helpscout-api-php

PHP Wrapper for the Help Scout API

MIT License

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Closed bkuhl closed 5 years ago

bkuhl commented 5 years ago

https://github.com/helpscout/helpscout-api-php/issues/128 points out that we could use more clarity around how to refresh an expired token so this PR adds an example as well as updates our README.