$wp_customize->add_setting( 'cd_photocount' , array(
    'default'     => 0,
    'transport'   => 'postMessage',
) );

$wp_customize->add_control( new WP_Customize_Range( $wp_customize, 'cd_photocount', array(
	'label'	=>  'Photo Count',
    'min' => 10,
    'max' => 9999,
    'step' => 10,
	'section' => 'title_tagline',
) ) );