A Hello World example for the WordPress REST API. Install this plugin and go the the /wp-json/wprahw/hello-world endpoint on your site and you will see an Hello World JSON Response.
You can perform PHPUnit tests on this plugin by simply going to the plugin directory and typing in these commands:
phpunitphpunit -c multisite.xml
You can run a WordPress PHP code standards validator script by performing these commands:
npm installcomposer installgrunt phpcs