Add guest bio & metadata

Author: leebyron

site/blog/20160418-mocking.md renamed to site/blog/20160419-mocking.md

@@ -2,8 +2,9 @@
 title: "Mocking your server is easy with GraphQL"
 layout: ../_core/BlogLayout
 permalink: /blog/mocking-with-graphql/
-date: 18 Apr 2016
+date: 19 Apr 2016
 byline: "Jonas Helfer"
+guestBio: engineer at Meteor working on Apollo
 ---
 Do you think mocking your backend is always a tedious task? If you do, reading this post might change your mind…