railfrog.com down - alternative URLs

[Thomas Nichols]

We got ourselves snarled in a DNS problem, which will take a few days
to resolve -- in the meantime, the railfrog.com site is available as
http://www.thereisnoshelf.com/
and the dev.railfrog.com wiki is at
https://cvsdude.com/trac/railfrog/cms/

We'll restore http://www.railfrog.com and http://dev.railfrog.com
ASAP.

-- Thomas