I wanted this feature too…you can accomplish it with this workaround I came up with:
1. Add this code where you want the reviews/stars to show:
<?php
$post_id = $post->ID;
$postReviews = mts_get_post_reviews( $post_id );
$total = $postReviews[0]->reviewsNum;
$user_average = $postReviews[0]->reviewsAvg;
//echo $user_average;
$percent = round((float)$user_average * 100 / 5 ) . '%';
//echo $percent;
?>
<div class="review-total-star-comments">
<div class="review-result-wrapper">
<i class="mts-icon-star icon-star"></i>
<i class="mts-icon-star icon-star"></i>
<i class="mts-icon-star icon-star"></i>
<i class="mts-icon-star icon-star"></i>
<i class="mts-icon-star icon-star"></i>
<div class="review-result" style="width: <?php echo $percent; ?>;">
<i class="mts-icon-star icon-star"></i>
<i class="mts-icon-star icon-star"></i>
<i class="mts-icon-star icon-star"></i>
<i class="mts-icon-star icon-star"></i>
<i class="mts-icon-star icon-star"></i>
</div><!-- .review-result -->
</div><!-- .review-result-wrapper -->
</div>
2. Add the CSS for the .review-total-star-comments div and everything nested in it directly to your theme. You can find this with Chrome developer tools etc.