Wikis listing for WPMU Dev Wiki Plugin

wiki_page_shortcode.php

add_shortcode('wiki_page','my_wiki_page');
function my_wiki_page($atts, $content) {

		ob_start();
		$post_type = 'incsub_wiki';

    // Gets every "category" (term) in this taxonomy to get the respective posts
    //$terms = get_terms( 'wiki_category' );

		$mainWikis = new WP_Query(array(
			'post_parent' => 0,
			'post_type' => 'incsub_wiki',
			'numberposts' => 100000
		));		
		$i =0 ;
		?>
		
		<div id="wiki_category_list" class="item-list">
		<div class="row">
		<?php
    while( $mainWikis->have_posts()) { 
				$mainWikis->the_post();
				echo '<div class="col-sm-6"><div class="item"><div class="row"><div class="col-sm-4">';
				if(has_post_thumbnail())
					the_post_thumbnail();
				echo '</div><div class="col-sm-8"><h2>'.get_the_title().'</h2>';
				$children = get_posts(array(
									'post_parent' => get_the_ID(),
									'post_type' => 'incsub_wiki',
									'numberposts' => 5
								));
								
				if(count($children)) {
					echo '<ul>';
					foreach($children as $child) {
						echo '<li><a href="'.get_permalink($child->ID).'" class="incsub_wiki_crumbs">'.$child->post_title.'</a></li>';
					}
					echo '</ul>';
				}
				else 
					echo '<p>No wikis</p><br/><br/>';
					
				echo '<a class="button" href="'.get_permalink(get_the_ID()).'">View All</a>';
				echo '<a class="button" href="'.get_permalink(get_the_ID()).'?action=edit&eaction=create" style="margin-left: 10px;">Create New</a>';
				
				echo '</div></div></div></div>';
				if(++$i%2 == 0)
					echo '</div><div class="row">';
    }
		
		if($i%2 != 0)
			echo '</div>';
		echo '</div>';	
	return do_shortcode(ob_get_clean());
}