Cleaned out public from repository, updated gitignore, added syntax

highlighting tests, improved syntax highlighting and styling of pre
blocks.
Overriding dynamic gist styling.
Added a plugin for pygments caching which should speed things up
terrifically.
added ender.js as a lightweight way of scripting the DOM, events, etc.
Some general typography and semantic html improvements.

sass/themes/classic/partials/_pinboard.scss

@@ -0,0 +1,15 @@
+#pinboard_linkroll {
+  .pin-title, .pin-description {
+    display: block;
+    margin-bottom: .5em;
+  }
+  .pin-tag {
+    @extend .aside-alt-link;
+    &:after {
+      content: ',';
+    }
+    &:last-child:after {
+      content: '';
+    }
+  }
+}