Girders and difficulty

They’re both in the game, and should be working
Merge branch 'master' of https://github.com/zachgreer/deathperception

Conflicts:
	Assets/Resources/Waves/Wave_1Diamond_1.prefab
	Assets/Resources/Waves/Wave_1Diamond_2.prefab
	Assets/Resources/Waves/Wave_1Popcorn_2.prefab
	Assets/Resources/Waves/Wave_1Popcorn_3.prefab
	Assets/Resources/Waves/Wave_1TripleShot_1.prefab
	Assets/Resources/Waves/Wave_3Popcorn_4.prefab
	Assets/Resources/Waves/Wave_3Popcorn_5.prefab
	Assets/Resources/Waves/Wave_6Diamond_1.prefab
	Assets/Resources/Waves/Wave_6Popcorn_3.prefab
	Assets/Resources/Waves/Wave_6Popcorn_4.prefab
	Assets/Scenes/Levels/WaveWorkshop.unity