Automatic Minecart (Boat and Horse)

v1.0
v1.1 - Update to 1.6.2 - Velocity added.
v2.0 - Update to 1.6.4 - Horse and Boat added, and command to spawn auto-vehicles
v2.1 - BugFix : remove vehicle On Player Death Event
v2.4 - BugFix and 1.7.2 compatibily : Allow to add TNT, Chest, Furnace etc... minecart on the rails
v2.5 - TP and Test Autominecarts + 1.7.9 compatibily : API and Commands