Fix the Allow: header value in 405 "Method not allowed." response.

bottle.py

@@ -440,7 +440,7 @@ def match(self, environ):
         nocheck = set(methods)
         for method in set(self.static) - nocheck:
             if path in self.static[method]:
-                allowed.add(verb)
+                allowed.add(method)
         for method in set(self.dyna_regexes) - allowed - nocheck:
             for combined, rules in self.dyna_regexes[method]:
                 match = combined(path)