Update to CraftBukkit 1.5.

@Wulfspider needs to fix the Spout repo to proxy the 1.5 build of
CraftBukkit so I can remove the repository in the pom for Bukkit.

Signed-off-by: Chris Sanders <zidane@outlook.com>
Use Bukkit versioning.
Signed-off-by: Chris Sanders <zidane@outlook.com>
Update CraftBukkit dependency to 1.5.1-R0.1-SNAPSHOT.
Update NMS and CB import paths to v1_5_R2.
Correct version in readme, and other touch-ups.
Update reflection for 1.5
Don't send packets we don't use anymore.

Signed-off-by: Mike Howe <dockter@almuramc.com>
Update for CraftBukkit 1.5.1.