BF: update terrfy for new travis VMS

New travis VMS have OSX 10.9.4, which installs new Python stuff like pip
and virtualenv; update to latest terrfy to deal with this.
Update to latest terryfy (including 10.10 naming)
Merge pull request #2 from matthew-brett/update-terryfy

MRG: update terrfy for new travis VMS

New travis VMS have OSX 10.9.4, which installs new Python stuff like pip and
virtualenv; update to latest terrfy to deal with this.