Cartridge doesn't work

[vbauer]

I'm sorry, because maybe I did something wrong.. but this cartridge didn't work for me:

Installation was correct:

3:53:06 vbauer@vladislav-bauer manet master rhc cartridge add https://raw.github.com/tresbailey/phantomjs-cartridge/master/metadata/manifest.yml -a manet     
The cartridge 'https://raw.github.com/tresbailey/phantomjs-cartridge/master/metadata/manifest.yml' will be downloaded and installed
Adding https://raw.github.com/tresbailey/phantomjs-cartridge/master/metadata/manifest.yml to application 'manet' ... done

customcarts-phantomjs-0.1 (PhantomJS Headless Browser Cartridge)
----------------------------------------------------------------
  From:    https://raw.github.com/tresbailey/phantomjs-cartridge/master/metadata/manifest.yml
  Scaling: x1 (minimum: 1, maximum: available) on small gears

...but I couldn't find PhantomJS and $OPENSHIFT_PHANTOMJS_DIR was empty:

[manet-vbauer.rhcloud.com 55919c6750044668ae00018e]\> echo $OPENSHIFT_PHANTOMJS_DIR