Hacker News stories for 3 PM on Tuesday Aug 20, 2013

0.994 An Absolute Beginner’s Guide to Node.js comments

0.694 Y Combinator Summer 2013 Demo Day, Batch 1 comments

0.505 Sovereign – Ansible playbooks to build and maintain your own personal cloud comments

0.498 Small Firm Creates A 3D-Printed Scale Model Of The Hyperloop comments

0.495 Should have hired a tech co-founder comments

0.375 NProgress: slim, site-wide progress bars comments