adns2620 library error

I bought an adns 2620 and I have used a arduino uno.However, although I drop the library folder of adns 2620 to arduino libraries folder(adns2620.h,adns2620.cpp),I couldnt finish my compiletion.the error was no such files.I think I should copy these files to other place which I don't know.I have been deal with this problem but I cant.If one helps me,I will be very happy.thank you.