Add Sass CLI steps

docs/_includes/components/figure.html

@@ -0,0 +1,13 @@
+<figure class="bd-figure" style="{{ include.style }}">
+  {%
+    include elements/responsive-image-2x.html
+    path=include.path
+    extension=include.extension
+    alt=include.alt
+    width=include.width
+    height=include.height
+  %}
+  <figcaption>
+    {{ include.caption }}
+  </figcaption>
+</figure>