[test] Updated Empty cart

+ Click on the link "Click here to continue shopping."
Merge branch 'develop' of github.com:jacquesbh/hackathon-casperjs into develop
Merge branch 'develop' of github.com:jacquesbh/hackathon-casperjs into develop
Updated config.js with comments & perform it
[test] Updated Category Level 1

Added assert exists on the active class
Updated config.js

Move "done" call
Added `--verbose` on the command line
Added filesystem variable: fs
Perform captures.

If previous capture is same as current, remove current :')