added documentation on the publish methods, closes GH-68
added documentation on the publish methods, closes GH-68

lahma/MassTransit,petedavis/MassTransit,jsmale/MassTransit,ccellar/MassTransit,abombss/MassTransit,lahma/MassTransit,lahma/MassTransit,ccellar/MassTransit,lahma/MassTransit,petedavis/MassTransit,abombss/MassTransit,lahma/MassTransit,abombss/MassTransit,ccellar/MassTransit,D3-LucaPiombino/MassTransit,ccellar/MassTransit,vebin/MassTransit,vebin/MassTransit