Show featured image in pages

featured_image_in_pages.php

add_filter('tc_show_single_post_content', 'thumbnails_css_in_pages');
function thumbnails_css_in_pages( $bool ){
  global $wp_current_filter, $post;
  if (  is_page() && isset( $post ) && ! in_array( '__loop', $wp_current_filter) )
    return true;
  return $bool;  
}

/* do not copy the following in your child-theme functions.php*/
/* Following code must be copied in your child-theme style.css  without the comments */
/* Replace 250px with the value you set in the single post thumbnail options*/
/*
body.page .tc-rectangular-thumb {
    height: 250px;
    max-height: 250px;
}
*/

Thanks. Actually I wrote gists were just a way to share the code with people who knew where to put it, because I told them along with a link to the gist.