added spawner functionality
Merge branch 'master' of https://github.com/tpham93/Viral-Tree

Conflicts:
	ViralTree/Classes/GameSpecific/Components/Thinker/SpawnerThinker.cs
	ViralTree/Classes/GameSpecific/World/Objects/EntityFactory.cs
added new fungus, removed Activators/BasicActivator.cs etc.