How to use next_posts_link/previous_posts_link for custom post types paginate?

Question

This is the code that worked for me. I have a custom post type called “feature” defined like this:

$args = array(
    'label'               => 'feature',
    'description'         => 'Product feature pages',
    'labels'              => array(
        'name'                => 'Features',
        'singular_name'       => 'Feature',
        'menu_name'           => 'Feature',
        'parent_item_colon'   => 'Parent Feature:',
        'all_items'           => 'All Features',
        'view_item'           => 'View Feature',
        'add_new_item'        => 'Add New Feature',
        'add_new'             => 'New Feature',
        'edit_item'           => 'Edit Feature',
        'update_item'         => 'Update Feature',
        'search_items'        => 'Search Feature',
        'not_found'           => 'No Features found',
        'not_found_in_trash'  => 'No Features found in Trash',
    ),
    'supports'            => array( 'title', 'editor', 'excerpt', 'thumbnail', 'revisions', 'custom-fields', 'page-attributes', ),
    'taxonomies'          => array( 'category' ),
    'hierarchical'        => false,
    'public'              => true,
    'show_ui'             => true,
    'show_in_menu'        => true,
    'show_in_nav_menus'   => true,
    'show_in_admin_bar'   => true,
    'menu_position'       => 5,
    'menu_icon'           => '',
    'can_export'          => true,
    'has_archive'         => true,
    'exclude_from_search' => false,
    'publicly_queryable'  => true,
    'capability_type'     => 'feature',
);
register_post_type( 'feature', $args );

Then I create a file called single-feature.php in my theme folder, and inside that file I have:

<ul class="pager">
              <li class="previous">
                  <?php 
                  previous_post_link( '%link', '<span class="meta-nav">' . _x( '&larr;', 'Previous feature', 'mistcrm' ) . '</span> %title' ); ?>
              </li>
              <li class="next">
                <?php 
                  next_post_link( '%link', '%title <span class="meta-nav">' . _x( '&rarr;', 'Next feature', 'mistcrm' ) . '</span>' ); ?>
              </li>
            </ul>