Add the action, post_id and nonce args as properties of data instead or url query params
remove ajax_url
Merge branch 'refs/heads/master' into select-improvements-POST
Better separation of Post Select and Selct
Use methods to output stuff to better allow customisation by subclass
move select code so its all together
remove uneccessary code
Merge pull request #89 from humanmade/select-improvements-POST

Select improvements post