What are the real world uses of this algorithm?
if you need some quick (not necessarily the best) solutions SA fits this purpose as it is quick. Also, the real world problems may be so complex that the optimal solutions cannot always be found.

What motivated you to implement this algorithm?
I need a SA to solve one of my problems today and I don't want to use C++ today. Also, I think others may need this quick-and-handy library.

What documents did you use to come up with the algorithm?
Well, not so much documents apart from wiki, because I have known this algorithm inside-out (in my memory)!