Events List Group by Category

/*
this snippet will create a new shortcode [category_events_list_group]

Sample output:

Music

Sept 2013

Jazz Only Night - 2013/10/15 - 2013/10/16
Rock n Roll 70's - 2013/10/18 - 2013/10/18

*/
function em_events_list_by_category(){

 $EM_Categories = EM_Categories::get( array( 'exclude' => array(1,2,3) ) );

 foreach( $EM_Categories as $EM_Category ){

 	echo "<h2>".$EM_Category->name."</h2>";
 	echo do_shortcode('[events_list_grouped mode="monthly" category="'.$EM_Category->term_id.'"]');

 }

}
add_shortcode('category_events_list_group', 'em_events_list_by_category');