linkify each section of the readme (#197)

Signed-off-by: Miek Gieben <miek@miek.nl>

Makefile

@@ -26,5 +26,4 @@ sync:
 # Scan all markdown files for Corefile snippets and check validity github.com/miekg/corecheck
 .PHONY: test
 test:
-	corecheck -exe $(PWD)/.coredns/coredns -dir content/blog
-	corecheck -exe $(PWD)/.coredns/coredns -dir content/manual
+	hugo server

themes/coredns/static/css/kube.css

@@ -195,7 +195,26 @@ h3 a, .h3 a,
 h4 a, .h4 a,
 h5 a, .h5 a,
 h6 a, .h6 a {
-  color: inherit; }
+  color: inherit;
+  text-decoration: none; }
+
+h1 a:hover, .h1 a:hover,
+h2 a:hover, .h2 a:hover,
+h3 a:hover, .h3 a:hover,
+h4 a:hover, .h4 a:hover,
+h5 a:hover, .h5 a:hover,
+h6 a:hover, .h6 a:hover {
+  color: inherit;
+  text-decoration: underline; }
+
+h1 a:active, .h1 a:active,
+h2 a:active, .h2 a:active,
+h3 a:active, .h3 a:active,
+h4 a:active, .h4 a:active,
+h5 a:active, .h5 a:active,
+h6 a:active, .h6 a:active {
+  color: inherit;
+  text-decoration: underline; }
 
 p + h2,
 p + h3,

themes/coredns/static/js/master.js

@@ -0,0 +1,7 @@
+$(document).ready(function() {
+    $(':header[id]').each(function() {
+        var anchor = document.createElement('a')
+        anchor.href = '#' + this.id
+        $(this).wrapInner(anchor)
+    });
+});