fix(url normalization): tests failing on windows because of path sep..

[diegourban]

The three tests below were failing on windows because of path normalization:

• URIs should not get all effed up;
• URIs should escape spaces;
• URIs should normalize URIs on O1.

"Since Windows recognizes multiple path separators, both separators will be replaced by instances of the Windows preferred separator ( \ )" - https://nodejs.org/api/path.html#path_path_normalize_path

[mattbasta]

Looks good! Would you mind adding a test?

[mattbasta]

I'll push a patch release a bit later today.

[XhmikosR]

@mattbasta: you should look into AppVeyor or something similar for Windows testing.

[mattbasta]

@XhmikosR done