Converting motivation.md to use slides template.

Also modifed the Makefile to use the slides template for this file
instead of the generic template.

Note that we do not need a Markdown extension for deck.js because
Pandoc is doing Markdown-to-HTML conversion for us.

pages/Makefile

@@ -19,7 +19,13 @@ all : commands
 ## preview  : Build website locally for checking.
 preview : $(DST_PAGES)
 
-# Pattern to build a page with Pandoc.
+# Pattern to build slides.
+$(DST_DIR)/motivation.html : $(SRC_DIR)/motivation.md
+	pandoc -s -t html \
+	--template=../_layouts/slides \
+	-o $@ $<
+
+# Pattern to build a generic page.
 $(DST_DIR)/%.html : $(SRC_DIR)/%.md
 	pandoc -s -t html \
 	--title-prefix='Software Carpentry' \

pages/motivation.md

@@ -2,18 +2,20 @@
 layout: slides
 title: Why Topic?
 ---
-<section data-markdown>
-  <script type="text/template">
+<section class="slide">
 ## Why Topic?
-  </script>
 </section>
-<section data-markdown>
-  <script type="text/template">
-## Why not topic?
-  </script>
+
+<section class="slide">
+## More Explanation
+
+* With
+* Bullet
+* Points
 </section>
-<section data-markdown>
-  <script type="text/template">
-Thank you.
-  </script>
+
+<section class="slide">
+## Next Steps
+
+Here we go!
 </section>