List and Pull don't work on subdirectories in Windows

[matthewblain]

Commands like 'drive list' don't work on Subdirectories in Windows.
This appears to be a confusion between local path separators (e.g. '\') and remote ones (e.g. '/').

Repro:
Run a command like this:
drive.exe list "Google Photos/2016"

Result:
"/Google Photos\\2016" cannot be found remotely

Expected:
Directory listing, e.g.
/Google Photos/2016/12
/Google Photos/2016/11
/Google Photos/2016/01

[odeke-em]

Thank you for the report @matthewblain and accompanying PR. As noted in the README, this code hadn't been tested nor supported for Windows but I can see you are working on making that possible, thank you!