Update tools/planetarium.json
Merge pull request #26 from luismadrigal/patch-2

Update tools/planetarium.json
+ insouciant | William Chan
Add modpagespeed.jmarantz.com

I've started a blog about the technology underlying mod_pagespeed.
It was suggested I add it to this directory, which seems like a cool
idea.

Hope you agree!
Merge pull request #27 from jmarantz/patch-2

Add modpagespeed.jmarantz.com