Use Markdownn for Primer index.

Author: BigBlueHat

primer/index.html

@@ -0,0 +1,13 @@
+---
+layout: fomantic
+title: Primer
+ga: 40462488
+---
+
+# Primers
+
+The following primers are sorted in most recent to least recent order:
+* [Latest](latest/)
+{% for draft in specs['requirements'] -%}
+* [{{ draft[0] }}]({{ draft[1] }})
+{% endfor %}