file io

- We still need to come up with a naming metaphor for this!
- it is a pipeline communication to stream a file from a server to a client.
- It follows a model similar to: http://zguide.zeromq.org/c:fileio3
dude. formatting. This is the third type of formatting that Iv'e seen in this pull request for where to place the ```*```. 
Granted. It's very creative :)