refactored book code to use new ItemMeta API rather than unstable net.minecraft.server.NBT*

if you update your bukkit.jar to 1.4.5-R1.0 or a more recent version this will work
added plugin.yml, which might be a good idea
made everything else work and added sound effects that didn't

i finally got around to testing this plugin, which it seems nobody else has done,
and i noticed that both EternityCommandExecutor and EternityListener create a new EternityMain,
but that new EternityMain creates new CommandExecutors and Listeners, which create new Mains,
and we have a vicious cycle.

i also made the book actually work (next time, prodigal, remember that pages are limited to 255
characters), and added a bit at the end to slightly add to the suspense, maybe, a bit, hopefully,
please.

i have no idea why sound effects don't work.
Merge pull request #1 from mathphreak/master

Fix a whole bunch of things.