title: Add Sticky post attribute to CPT UI
body: <p>I'm trying to figure out how to define a post as either featured or sticky to display in a different way on my WordPress build. </p>
  
  <p>CPT UI gave me: </p>
  
  <pre><code>add_action('init', 'cptui_register_my_cpt_projects');
  function cptui_register_my_cpt_projects() {
  register_post_type('projects', array(
  'label' =&gt; 'Projects',
  'description' =&gt; 'Add individual projects',
  'public' =&gt; true,
  'show_ui' =&gt; true,
  'show_in_menu' =&gt; true,
  'capability_type' =&gt; 'post',
  'map_meta_cap' =&gt; true,
  'hierarchical' =&gt; false,
  'rewrite' =&gt; array('slug' =&gt; 'projects', 'with_front' =&gt; true),
  'query_var' =&gt; true,
  'supports' =&gt; array('title','editor','excerpt','trackbacks','custom-fields','comments','revisions','thumbnail','author','page-attributes','post-formats'),
  'labels' =&gt; array (
    'name' =&gt; 'Projects',
    'singular_name' =&gt; 'Project',
    'menu_name' =&gt; 'Projects',
    'add_new' =&gt; 'Add Project',
    'add_new_item' =&gt; 'Add New Project',
    'edit' =&gt; 'Edit',
    'edit_item' =&gt; 'Edit Project',
    'new_item' =&gt; 'New Project',
    'view' =&gt; 'View Project',
    'view_item' =&gt; 'View Project',
    'search_items' =&gt; 'Search Projects',
    'not_found' =&gt; 'No Projects Found',
    'not_found_in_trash' =&gt; 'No Projects Found in Trash',
    'parent' =&gt; 'Parent Project',
  )
  ) ); }
  </code></pre>
  
  <p>I tried adding in     <code>'meta_key' =&gt; 'Sticky', &amp;     'meta_key' =&gt; 'on',</code> however neither were successful. </p>
  
  <p>How would I go about adding an option to the front end of each post to make it featured or sticky? </p>