Fix URL building
Fix URL building

Using -stringByAppendingString: didn’t append a “/“ at the end of the
built path if it wasn’t included in the gameID. The docs say that
-stringByAppendingPathComponent: only works with file paths and not
string reps of URLs but since a relative path is being built as a
string, it works fine.

brianmpalma/mickey,brianmpalma/mickey,brianmpalma/mickey