Convert asciicasts#_preview to slim

app/views/asciicasts/_preview.html.erb

@@ -1,18 +0,0 @@
-<% cache ['thumbnail', asciicast] do %>
-  <div class="presentation">
-    <%= link_to asciicast, :class => 'preview-link' do %>
-      <div class="play-button"><div class="arrow">►</div></div>
-      <div class="thumbnail"><%= asciicast.thumbnail(30, 10) %></div>
-    <% end -%>
-
-    <div class="info">
-      <h3>
-        <%= link_to asciicast.title, asciicast %>
-      </h3>
-
-      <p class="date">
-        <%= time_ago_tag asciicast.created_at %> by <%= asciicast.author_link %>
-      </p>
-    </div>
-  </div>
-<% end -%>

app/views/asciicasts/_preview.html.slim

@@ -0,0 +1,12 @@
+- cache ['thumbnail', asciicast] do
+  .presentation
+    = link_to asciicast, :class => 'preview-link' do
+      .play-button
+        .arrow
+          | ►
+      .thumbnail = asciicast.thumbnail(30, 10)
+
+    .info
+      h3 = link_to asciicast.title, asciicast
+      p.date
+        | #{time_ago_tag asciicast.created_at} by #{asciicast.author_link}