Change dropdown blank option text

Hi,
I needed to change the blank option text, so I have modified the plugin for my purpose. Would it be possible for you to update your current live version with my updates?

You can see the change in action on https://sabeo.com/ (within header banner)

You can download the updated version on https://yourecruit.com/resources_public/sources/advanced-custom-post-search-nest.zip (anyone feel free to use this version),
optionaly a diff to the current version (1.2.4) https://yourecruit.com/resources_public/sources/advanced-custom-post-search-nest.diff