Path hasn't been changed in bridge-https.py
The `build` directory has been axed, but `bridge-https.py` still looks for it.  Might be worth doing a patch release that fixes this.
diff --git a/bridge-https.py b/bridge-https.py
index f43b16ae..003ceaa8 100644
--- a/bridge-https.py
+++ b/bridge-https.py
@@ -4,5 +4,4 @@ import ssl
 
 httpd = BaseHTTPServer.HTTPServer(('localhost', 4443), SimpleHTTPServer.SimpleHTTPRequestHandler)
 httpd.socket = ssl.wrap_socket (httpd.socket, certfile='localhost.pem', keyfile='localhost-key.pem', server_side=True)
-os.chdir('./build')
 httpd.serve_forever()
['bridge-https.py']