Add streetscope logo

Take a look at this and see if logo displays correctly on the site. I didn't run it locally because I didn't go through process of installing the dependencies. I think the only thing that may need fixing, is the file path to image. If it's not displaying correctly, I'll install the other stuff in order to run locally and fix.. so lmk!
Preprended 'static' to the image path and we're good to go. Thanks very much @livienyin