add cjdns, and minor grammar edits

Adding cjdns to examples of ways to find peers. cjdns uses VRR (virtual ring routing) and a DHT (distributed hash table) to run a mesh network over existing infrastructure. All packets are encrypted, and only the sending node and the receiving node gets to read them.

The cool thing about cjdns is you get a self-assigned ipv6 number. No need to mess with standards bodies to get your block to distributed. What if every cyphernet object had its own self-assigned ipv6 number? Would it run cjdns?