Move template parts into their own dedicated folder and update Infinite Scroll to reflect this change. See #642. Props @leopuleo.

template-parts/content-none.php

@@ -0,0 +1,33 @@
+<?php
+/**
+ * The template part for displaying a message that posts cannot be found.
+ *
+ * Learn more: http://codex.wordpress.org/Template_Hierarchy
+ *
+ * @package _s
+ */
+?>
+
+<section class="no-results not-found">
+	<header class="page-header">
+		<h1 class="page-title"><?php _e( 'Nothing Found', '_s' ); ?></h1>
+	</header><!-- .page-header -->
+
+	<div class="page-content">
+		<?php if ( is_home() && current_user_can( 'publish_posts' ) ) : ?>
+
+			<p><?php printf( __( 'Ready to publish your first post? <a href="%1$s">Get started here</a>.', '_s' ), esc_url( admin_url( 'post-new.php' ) ) ); ?></p>
+
+		<?php elseif ( is_search() ) : ?>
+
+			<p><?php _e( 'Sorry, but nothing matched your search terms. Please try again with some different keywords.', '_s' ); ?></p>
+			<?php get_search_form(); ?>
+
+		<?php else : ?>
+
+			<p><?php _e( 'It seems we can&rsquo;t find what you&rsquo;re looking for. Perhaps searching can help.', '_s' ); ?></p>
+			<?php get_search_form(); ?>
+
+		<?php endif; ?>
+	</div><!-- .page-content -->
+</section><!-- .no-results -->