http://gopigeon.biz/static/vendors/bower_components/flot.curvedlines/curvedLines.js
http://postlikes.com/js/flot.curvedlines/curvedLines.js
https://www.encueston.com/vendors/bower_components/flot.curvedlines/curvedLines.js
http://www.ariiyatickets.com/new/js/flot/curvedLines.js
http://www.tapwires.com/assets/plugins/curvedlines/curvedLines.js