New Package: Announcing ROS/DDS proxies

We are happy to announce the ros_dds_proxies:

As recently, there was some discussion on using DDS as communication layer in ros. This package contains our implementation on using DDS middleware for a multi-robot systems. We have been successfully using this implementation in our project (IMPERA). In our experiments, all the messages were successfully delivered to all robots, even with communication outage for about 15 minutes. 

Any comment or improvement are welcome.