1.7.0

• Changed the way to detect the bigger image when 'getBiggerImage' or 'getBiggerIcon' is true. Until now the php function arsort was used but it doesn't work fine with images with the same dimmensions. From now, it returns the first bigger image found (the first images are suppossed to be the more relevants).
• The options for the Curl request resolver have been changed to camelCase for more consistency with the other options
• Improvements in the demo page.