Squashed commit of the following:

commit bcb038cd3fbfcc233ac4bd2673b2fbe04dbfeb85
Author: Jan Nahody <jan@nahody.com>
Date:   Thu Aug 14 08:17:32 2014 +0200

    Gulpfile rewrite.

commit d90992bed6714b2b70e09a3bc24628d59d22afc4
Author: Jan Nahody <jan@nahody.com>
Date:   Tue Aug 12 17:41:13 2014 +0200

    redefined serve task. currently called dev.