doc: explaining the scheduler interaction with an ASCII msg seq diagram
fixed access to a running relay via the ccn-lite-ctrl cmd
created a ccn-lite-peek command for simple tests (it talks CNNx via UDP or UX sockets)
added CCNB encoded chunks in test/ccnb
- this is for populating a relay's content store, testing the ccnb parser
- the content was taken from the CCNx-0.7.1 doc tree
- chunks were generated with a patched ccnpoke cmd from the CCNx suite