updated demo to use the sync() method once a user logs in

Signed-off-by: Bruno Gaspar <brunofgaspar1@gmail.com>
Merge branch 'master' of github.com:cartalyst/demo-cart

# By Suhayb El Wardany
# Via Suhayb El Wardany
* 'master' of github.com:cartalyst/demo-cart:
  remove clearConditions
  capitalize wishlist facade in composer.json
  Add coupons
  Add item Based Shipping