Fixed Hello callback as per the RFC (Request params is an array and so is response)

Signed-off-by: Madhu Venugopal <madhu@socketplane.io>
Silly game using libovsdb as an example for applications to make use of the library

We can improve this example further to show insert / delete and modify as well.

Signed-off-by: Madhu Venugopal <madhu@socketplane.io>
Merge pull request #29 from mavenugo/app

Added an example application (play_with_ovs) and fixed a bug in echo processing