Benjy Weinberger authored May 01, 2016 and Benjy Weinberger committed May 01, 2016

In particular, make this the canonical domain for Google
indexing purposes.

Note: does not modify cheeseshop links or the install script
download link.

Testing Done:
CI here: https://travis-ci.org/pantsbuild/pants/builds/127120339

Reviewed at https://rbcommons.com/s/twitter/r/3805/