Allow development versions of phantomjs to be used.
Allow development versions of phantomjs to be used.

For example, when phantomjs reports its version as '1.6.0 (development)'

YOTOV-LIMITED/whitehall,ggoral/whitehall,YOTOV-LIMITED/whitehall,hotvulcan/whitehall,askl56/whitehall,YOTOV-LIMITED/whitehall,ggoral/whitehall,ggoral/whitehall,hotvulcan/whitehall,robinwhittleton/whitehall,askl56/whitehall,alphagov/whitehall,askl56/whitehall,YOTOV-LIMITED/whitehall,alphagov/whitehall,ggoral/whitehall,robinwhittleton/whitehall,askl56/whitehall,hotvulcan/whitehall,alphagov/whitehall,robinwhittleton/whitehall,alphagov/whitehall,robinwhittleton/whitehall,hotvulcan/whitehall