We distribute our plugin using Freemius. They are originally WordPress distributors. So they require us to include a PHP file(dflip-ignore.php) with Plugin details and readme.txt with PHP requirement. These files can be ignore or deleted once you download. They do not make any issues nor they are require to run the plugin, they only have comments in the PHP file so that Freemius could read them to detect the version number.
Why are there PHP files in download zip file?
Updated on March 4, 2022
All DearFlip comments and discussion have been moved to
https://github.com/dearhive/dearflip-js-flipbook/discussions