Add pentago blog post

Here is a blog post about the pentago server (http://perfect-pentago.net), whose hosting was donated by Rackspace through your open source program.  Thanks!

Mini bio: Geoffrey Irving is a founder at the new interactive programming startup Eddy Systems (http://eddy.systems).  Previously, he worked at Pixar, D. E. Shaw Research, Weta Digital, and Otherlab doing high performance computing, computational physics, and computer graphics.  He has degrees in mathematics and computer science from Caltech and Stanford, and received film credits on Ratatouille, Wall-E,
Up, and Tintin.

Social media: @geoffreyirving, facebook.com/irving

Redaction, editing or structure changes by technical writer staff: Accept

Desired date of publishing: next Tuesday, 2014-09-23.