Period Work still need editing
DEN packet codes, still modification needed;
PacketId modified.
Files forgot to upload(?)
Merge branch 'master' of https://github.com/PhilipsIII/ndn-mobility into PhilipsIII-master
File licenses

Changed the licenses names in some of the files in the commit by Zhu.
Merge branch 'PhilipsIII-master'

This includes the DEN packet specification and Wire implementation. Has been tested to be fully compilable.