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
formatting in this as well as the other .cpp files seems to be off.   Have you installed the sublime formatting? (see Research/sublime_cpp_settings. Set them as Preferences -> Settings User.   Install the package AStyleFormatter and you can reformat your source code to what it should be.