Added small server script to be used as CREST callback. This can listen for and print the authorization code.

server.py

@@ -0,0 +1,24 @@
+from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer
+import urlparse
+
+class RequestHandler(BaseHTTPRequestHandler):
+
+    def __init__(self, *args, **kwargs):
+        BaseHTTPRequestHandler.__init__(self, *args, **kwargs)
+
+    def do_GET(self):
+        bits = urlparse.urlparse(self.path)
+        print urlparse.parse_qs(bits.query)
+
+
+def main():
+    try:
+        server = HTTPServer(('', 6461), RequestHandler)
+        print('Test server running...')
+        server.serve_forever()
+    except KeyboardInterrupt:
+        print "Closing socket"
+        server.socket.close()
+
+if __name__ == '__main__':
+    main()