Merge pull request #21 from tpeigne/master

Branch synchronization
Fix a bug on fancybox when a product have only one image
Update README.md
Update README.md
Fix #22 : ''On sale!' not displayed on product list when check box 'Display the "on sale" icon' is checked
Add tax display on product page
Display the "Online only" at the bottom of the product image
Add a space between blockspecials title and content
Update README.md