Excerpt not showing […]

I’ve been customizing my own home page, displaying posts separately from the main blog page. I found code that is suppose to add a “Continue Reading” link to my excerpts but when I implement it, it doesn’t show. According to the site I got it from:

http://zeaks.org/2012/display-excerpts-in-twenty-twelve-theme
(scroll down to “Adding the Continue Reading Link”)

It replaces the […] that shows up at end of excerpts. Thing is, my excerpts don’t even have that and I am thinking that is the reason this new code doesn’t work. So, I’m just wondering what I may be missing in my code that allows one or the other to be there. Here is the code of my custom template page:

<?php
/**
 * Template Name: Page of Posts
 *
 * for a child theme of Twenty_Twelve
 */

get_header(); ?>

        <div id="primary" class="site-content">
                <div id="content" role="main">

                <?php
                        $paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
                        $args= array(
                                'category_name' => 'Uncategorized', // Change this category SLUG to suit your use; or see for query parameters http://codex.wordpress.org/Class_Reference/WP_Query#Parameters
                                'paged' => $paged,
				'posts_per_page' => 3,
				'post_type' => 'post',
);
                        query_posts($args);
                        if( have_posts() ) : ?>

            			<?php while ( have_posts() ) : the_post(); ?>
               				<article id="post-<?php the_ID(); ?>" <?php post_class(); ?>>
						<header class="entry-header">
							<h1 class="entry-title">
								<a href="<?php the_permalink(); ?>" rel="bookmark"><?php the_title(); ?></a>
							</h1>
						</header><!-- .entry-header -->

						<div class="entry-summary">
						<!-- Adds the 140x140 thumbnail/featured image -->
        <div class="excerpt-thumb">
            <a href="<?php the_permalink(); ?>" title="<?php printf( esc_attr__( 'Permalink to %s', 'twentytwelve' ), the_title_attribute( 'echo=0' ) ); ?>" rel="bookmark">
            <?php the_post_thumbnail('excerpt-thumbnail', 'class=alignleft'); ?>
            </a>
        </div>
							<?php the_excerpt(); ?>
						</div><!-- .entry-summary -->

						<footer class="entry-meta">
							<?php twentytwelve_entry_meta(); ?>
							<?php edit_post_link( __( 'Edit', 'twentytwelve' ), '<span class="edit-link">', '</span>' ); ?>
						</footer><!-- .entry-meta -->
	</article><!-- #post -->
                				<?php comments_template( '', true ); ?>
            					<?php endwhile; // end of the loop. ?>

            					<?php twentytwelve_content_nav( 'nav-below' ); ?>

            		<?php else : ?>
            			<article id="post-0" class="post no-results not-found">
                			<header class="entry-header">
                    				<h1 class="entry-title"><?php _e( 'Nothing Found', 'twentytwelve' ); ?></h1>
                			</header>
                			<div class="entry-content">
<?php the_post_thumbnail(); ?>
                    				<p><?php _e( 'Apologies, but no results were found. Perhaps searching will help find a related post.', 'twentytwelve' ); ?></p>
                    				<?php get_search_form(); ?>
                			</div><!-- .entry-content -->
            			</article><!-- #post-0 -->

            		<?php endif; wp_reset_query(); ?>

        </div><!-- #content -->
    </div><!-- #primary -->