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
change to c++ style includes
```cstdlib``` and ```cstdint```

czmq, g2log and boost/thread should be used with ```< ... >``` instead of quotation for includes. The reasoning behind is that local includes we use double quotes but library includes are made with ```<  ... >``` includes.