ACF support.
Merge branch 'acf' of https://github.com/wwalc/ckeditor_imageresponsive into wwalc-acf

# By Wiktor Walc
# Via Wiktor Walc
* 'acf' of https://github.com/wwalc/ckeditor_imageresponsive:
  ACF support.

Conflicts:
	plugin.js

Fix Tabs/Spaces conflict
Merge branch 'wwalc-acf'

* wwalc-acf:
  ACF support.