title: Changing header cart text in Storefront
body: <p>I would like to edit the text in the header mini cart in Storefront theme:
  'X items'
  to just :
  'X'
  <a href="http://demo.woothemes.com/storefront/" rel="nofollow">http://demo.woothemes.com/storefront/</a></p>
  
  <p>Where can I access this? Can't find it anywhere in storefront or woocommerce files. I can see hook in header.php:
  storefront_header_cart
  but can't find any function for this in other files?</p>
  
  <p>I would like to remove the dropdown when you hover over it too. Where can I change this?</p>