how to get rid of an add-on called Search-Quick

I noticed recently that my Safari homepage keeps getting replaced by something called Search Quick (search-quick.com) even after I specifically reset it to the page I want. It shows a graphic with a input bar and a flashing cursor underneath the graphic. I have never accessed this site so i have no idea where this came from. According to the makers it is supposed to be an add-on to quickly find stuff, and shows up in Spotlight as "Search Quick - Apps We Trust" but it is nowhere to be found, so I am unable to delete it, which I would love to do. Please help. I've been at it for many frustrating hours.