Alpha Color fields

[shaylash]

Issue description:

It seems that the alpha declaration for a color fields has moved in a the choices array. Can you confirm this and maybe update the doc if it is the case since as of now with the old declaration alpha color picker do not work anymore.

Version used:

latest develop version (04/12/2016)

Using theme_mods or options?

theme_mods

Code to reproduce the issue (config + field(s))

DOES NOT WORK :
Kirki::add_field( 'my_config', array(
'type' => 'color',
'settings' => 'my_setting',
'label' => __( 'This is the label', 'my_textdomain' ),
'section' => 'my_section',
'default' => '#0088CC',
'priority' => 10,
'alpha' => true,
) );

WORKS :
Kirki::add_field( 'my_config', array(
'type' => 'color',
'settings' => 'my_setting',
'label' => __( 'This is the label', 'my_textdomain' ),
'section' => 'my_section',
'default' => '#0088CC',
'priority' => 10,
'choices' => array(
'alpha' => true,
),
) );