My First NPC

[McCls]

• Should be instantiated along with the Player - https://github.com/darin-ellis7/GridGame/pull/16
• Should have a simple automatic movement scheme - https://github.com/darin-ellis7/GridGame/pull/16
• Should have its movement restricted to its side of the grid - https://github.com/darin-ellis7/GridGame/issues/8
• Should take hits
• Should fire weak attacks every 3 seconds
• Should explode when HP reaches 0

[darin-ellis7]

Making this an epic, so that we can break it up into smaller subtasks.