Update mocking blog post

Author: Sashko Stubailo

site/blog/20160419-mocking.md

@@ -71,12 +71,12 @@ But enough talking, here’s a complete example:
 <script src="https://gist.github.com/helfer/c7bbf659bdaeb36d4f8a389e39a7a5fa.js"></script>
 
 ## Live demo + try it yourself
-To see the example in action and see what output it generates, head over to the [live demo](https://apollostack.github.io/mock-demo/) and click the “play” button a couple of times!
+To see the example in action and see what output it generates, head over to the [live demo](https://launchpad.graphql.com/98lq7vz8r) try running some queries!
 
-If you want to fiddle around with the example, you can do that — it’s all on GitHub: [apollostack/mock-demo](https://github.com/apollostack/mock-demo). If you’re curious about how it works or want to see what other tools we’re building for GraphQL, then head over to [apollostack/graphql-tools](https://github.com/apollostack/graphql-tools).
+If you want to fiddle around with the example, just click the "Download" button in the Launchpad UI. If you’re curious about how it works or want to see what other tools we’re building for GraphQL, then head over to [apollostack/graphql-tools](https://github.com/apollostack/graphql-tools).
 
 Pretty cool, right? All of that becomes possible by using a type system. And that’s only just the beginning — we‘re working on bridging the gap between mocking and the real thing so that your mock server can gradually turn into your real server as you add more functionality to it.
 
 - - -
 
-*This post was originally published on [Building Apollo](https://medium.com/apollo-stack), a blog where Sashko Stubailo and myself write about building a futuristic GraphQL-based data stack called [Apollo](http://www.apollostack.com). We publish one or two posts every week, about the stuff we’re working on and thinking about.*
+*This post was originally published on [the Apollo Blog](https://medium.com/apollo-stack). We publish one or two posts every week, about the stuff we’re working on and thinking about.*