toggleAttr() jQuery plugin

/*!
 * toggleAttr() jQuery plugin
 * @link https://gist.github.com/aboutaaron/6916c539db4ee9f66d51
 * @description .toggleClass() but for attrs. Useful for toggling classes with SVGs or anything that's not a class
 * @author Aaron Williams <http://aboutaaron.com/>
 * @thanks: Mathias Bynens <http://mathiasbynens.be/> for original
 */
jQuery.fn.toggleAttr = function(attr, value) {
 return this.each(function() {
  var $this = $(this);
  $this.attr(attr) ? $this.removeAttr(attr) : $this.attr(attr, value);
 });
};