code: function(buttonLabels){
  			var label = 'Img';
  			if (buttonLabels === 'fontawesome' || typeof buttonLabels === 'object' && !!(buttonLabels.fontawesome)) {
  				label = '<i class="fa fa-picture-o"></i>';
  			}
  			
  			if (typeof buttonLabels === 'object' && buttonLabels.img) {
  				label = buttonLabels.img;
  			}
  
  			return '<button data-addon="images" data-action="add" class="medium-editor-action mediumInsert-action">'+label+'</button>';
  		}
docs: Returns insert button
  
  @param {string} buttonLabels
  @return {string}