Update offline pages

Author: csswizardry

offline.md

@@ -16,6 +16,7 @@ when you have a connection, but until then you can:
 
 Or if you’d like to read something:
 
+* [Case Study: Ocado Workshop](/case-studies/ocado-workshop/)
 * [Pragmatic, Practical, and Progressive Theming with Custom Properties](/2016/10/pragmatic-practical-progressive-theming-with-custom-properties/)
 * [Mixins Better for Performance](/2016/02/mixins-better-for-performance/)
 * [More Transparent UI Code with Namespaces](/2015/03/more-transparent-ui-code-with-namespaces/)

sw.js

@@ -1,4 +1,4 @@
-var cacheName = 'csswizardry:0001';
+var cacheName = 'csswizardry:0002';
 var cacheFiles = [
   '/',
   '/about/',
@@ -8,7 +8,8 @@ var cacheFiles = [
   '/2015/03/more-transparent-ui-code-with-namespaces/',
   '/2015/08/bemit-taking-the-bem-naming-convention-a-step-further/',
   '/2016/02/mixins-better-for-performance/',
-  '/2016/10/pragmatic-practical-progressive-theming-with-custom-properties/'
+  '/2016/10/pragmatic-practical-progressive-theming-with-custom-properties/',
+  '/case-studies/ocado-workshop/'
 ];
 
 self.addEventListener('install', function(event) {