message on branch deprecation

facebookarchive / facebook-instant-articles-sdk-php

The Facebook Instant Articles SDK for PHP provides a native interface for creating and publishing Instant Articles.

https://instantarticles.fb.com/

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Closed mburak closed 6 years ago

mburak commented 6 years ago

This PR

adds a note on the readme to inform about the HHVM branch stopping receiving updates.