ruby => ruby-amqp

ruby should be done with Bunny 0.9 which is much easier to use
for beginners.
README updates
README for the new Bunny-based version
Tutorial 1 code ported to Bunny
Use the channel we open
Cosmetics
Tutorial 2 ported to Bunny
Tutorial 3 ported to Bunny
Tutorial 4 ported to Bunny
Tutorial 5 is ported to Bunny