Riemann output

[sparrc]

cc @allenj

[sparrc]

@allenj I took your commit and added the godep dependencies as well as the docker container. You can see in the 3rd commit that I also removed some of the object reference/dereferencing by mostly storing and passing pointers, which should be more performant as well.

Let me know what you think, and if it looks good I'll merge it to master, thanks a bunch for your contribution!! a lot of people have been asking for this 👍

[allenj]

Looks good. Thanks @sparrc . First thing I've written in golang so I'm glad you looked over and fixed those references/derefs.