added multiplexing example and doc to README.md
added easier AES crypto with docs to README.md and ported to Socket.IO as well.
added extra detail to the AES Crypto section.
fixed mixed variable name in AES doc.
updated README.md with a few text updates and Multiplexing doc updates.
fixed broken link in Multiplexing section of README.
fixed WebSocket example missing a var.
updated example with latest js features.
moved a few examples into the new repository for consolidation of the different types of examples.
added presence details.
updated presence/callback details.
Merge branch 'master' into CL-1280
fixing failing tests due to error in Makefile