Check for theme support

<?php
add_action( 'admin_print_styles', 'plugin_theme_support' );
function plugin_theme_support(){
    $theme_support = get_option( 'plugin_theme_support', 0 );
    if( 0 == $theme_support && ! current_theme_supports( 'plugin_theme_support' ) ){
        add_action( 'admin_notices', 'theme_does_not_support_plugin' );
    }
}
?>