Driver Does Not Install When Using Node 4.x

[wrumsby]

Version 0.0.4 does not install when using Node 4.x.

If I have a project that depends on dalek-browser-phantomjs and try to install using npm install (assuming an empty node_modules folder) the installation hangs after

Copying extracted folder...

is logged to the console.

The issue seems to be that the version of Medium/phantomjs being used (1.9.12) depends on a version of ncp that does not work on Node 4.x because of AvianFlu/ncp#79, i.e. if I change the version of ncp used by phantomjs from ~1.0.1 to ~2.0.0 and manually run phantomjs' install.js the installation now works.

Potentially this driver could update to a newer version of phantomjs as versions from 1.9.14 up do not depend on ncp and should support Node 4.x.

[wrumsby]

Also adding a link to nodejs/node#2798

[wrumsby]

This should actually be fixed by #10 (although the dependency could be expressed as ~1.9.14 instead of 1.9.x), but we would need a new release and a new version published to npm.