Continued work on Candy Drop and Pinata Health Functionality

The pinata has a health property, but it doesn't do anyhting yet if it
hits zero.

The candy instantiates 10% of the time when the pinata is hit with the
player's (currently makeshift) sword.

Another script is there, but not yet working, that should increase the
player's multiplayer by += 1, and should destroy the dropped candy.

Added particle effect prefab to candy drops.