mini-ndn

There is currently no obvious method of creating Python sockets native to a node's network namespace from the main application; either it does not exist or is extremely poorly documented. This leads to awkward coding patterns and is one of the most obvious blockers for the usage of Python-NDN applications on nodes without needing to manage additional processes. We either need to document and potentially add helper methods for this if the functionality exists already, or otherwise attempt to implement this. For the latter, we should likely try and merge this to Mininet directly.