Added  oroginal plugin file from
  http://dev.ckeditor.com/ticket/9998?cversion=1&cnum_hist=45#comment:45
  http://pastebin.com/XUC7rCdn#

  @author pr0nbaer

	new file:   plugin.js
Applied code linting and some helpful improvements
	modified:   README.md
	modified:   plugin.js
Added version