Fix backslash in mount route under Windows cncjs#551

src/server-cli.js

@@ -26,7 +26,10 @@ const parseMountPoint = (val, acc) => {
  mount.target = r[2];
  }
 
- mount.route = path.join('/', mount.route || '').trim(); // path.join('/', 'pendant') => '/pendant'
+ // mount.route is interpreted by cncjs code that uses posix syntax
+ // where the separator is / , so we perform this join in posix mode
+ // mode to avoid introducing \ separators when running on Windows.
+ mount.route = path.posix.join('/', mount.route || '').trim(); // path.join('/', 'pendant') => '/pendant'
  mount.target = (mount.target || '').trim();
 
  acc.push(mount);