Don't leave parados clients behind.

[githubsands]

Parados clients should be able to start and receive spans on their own accord without communicating with the xmidt team. For this to work spanner's decorate function must take into account a case that indicates whether or not a parados client wants Money. This feature is dependent off acknowledging the issue in unison with wrp-C & parados.

Currently decorate will only function if a HTTP header contains a money trace. As of now wrp-C (and to my knowledge, parados) does not contain the needed fields for money to be utilized.