Freemius - WP Markdown Editor

functions.php

<?php
/**
 * Update markdown supported post types.
 *
 * @author Vova Feldman
 */
function freemius_update_supported_markdown_posts() {
	if ( ! class_exists( 'WPCom_Markdown' ) ) {
		// WP Markdown isn't installed.
		return;
	}

	add_post_type_support( 'docs', WPCom_Markdown::POST_TYPE_SUPPORT );
	remove_post_type_support( 'post', WPCom_Markdown::POST_TYPE_SUPPORT );
	remove_post_type_support( 'page', WPCom_Markdown::POST_TYPE_SUPPORT );
}

add_action( 'init', 'freemius_update_supported_markdown_posts', 9999 );