Make “ACF V4 star rating field type” compatible for Advaced custom fields 5

Hello every body i want to make this ACF 4 Star rating plugin compatible for ACF 5. Who can help me please.
I installed the plugin but i can not see star rating field among other field types. This is plugin link.

// Include field type for ACF4
function acf_srf_register_fields() {
add_action('acf/register_fields', 'acf_srf_register_fields');