Feature: allow to pass the app key through an environment variable #12
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This adds the possibility to supply the GitHub application's private key through a new environment variable:
APP_KEY. This is useful in CI/CDs where secrets may not be stored in files, and users may not wish to store them into an intermediary file.Note: there is no validation whether or not a private key was supplied as there wasn't any check in the original code either. Let me know if you would like me to add a check.