Week 2 - Tile Setup

I've started working on our team tower defense game. I set up Unity's 'Tile Painter' tool to make it very easy to design and create new levels. I also managed to figure out how to stop the player from placing towers on the path using a 2D collider. I've also started to work on being able to click on a sprite of a tower to spawn a new tower and be able to place it somewhere in the world.