Fix fruitful slider to not crash IE6, IE7 and IE8

One of my client's user reported that the brand new site I made crashed her IE7 browser. On my side with IE6 it would loads forever (blank page). I tracked down the problem and it is the flexslider that is not behaving well with IE 6,7,8. The wordpress theme used was fruitful (which is really nice btw) and is using flexslider.

I wrote a patch for Fruitful 2.2.1. It fixes all IE6, IE7 and IE8. It will revert to other kind of slider for those browser versions (better than a crash). You need to update wp-content/themes/fruitful/functions.php with the one from my github account.

Diff of change

https://github.com/foligny/fruitful-theme-ie-friendly/commit/3af455cf0d72b3caeef248dea120b44a41cd7f59