use the new read-only flag
use the new read-only flag

siplabs/kazoo-php-sdk,voxter/kazoo-php-sdk,siplabs/kazoo-php-sdk,dhdanno/kazoo-php-sdk,2600hz/kazoo-php-sdk,voxter/kazoo-php-sdk,dhdanno/kazoo-php-sdk,2600hz/kazoo-php-sdk,2600hz/kazoo-php-sdk