Added spawning enemies

Spawn enemies by pressing "L"
Added spawning waves

Enemies will spawn each wave. Another wave starts when all enemies are
gone.

For now, placeholders are in effect until the actual melee and range
enemies are put in
test
Merge branch 'developer' of https://github.com/jcollins2014/Project into hao

Conflicts:
	Assembly-CSharp-vs.csproj
	Assembly-CSharp.csproj
	Assets/Scenes/GameScene.unity
	Assets/Scripts/Game/Enemies.meta
	Assets/Scripts/Interface/GameGUI.cs
	Library/CurrentLayout.dwlt
	Library/InspectorExpandedItems.asset
	Library/ScriptAssemblies/Assembly-CSharp.dll
	Library/ScriptAssemblies/Assembly-CSharp.dll.mdb
	Library/assetDatabase3
	Library/expandedItems
	Library/guidmapper
	Library/metadata/7f/7fba0c7ead37bf7428320506bfa837a2
	Library/metadata/98/98337e9f0fb10124686ea1d1d22a3673
	Library/metadata/ab/ab2190278d94df04ea9ccb33295fad0f
	Library/metadata/c0/c05cbf99ea7aaae4da3c3c1b32750cac
	Library/metadata/d2/d291dcd570b390546a1a5a73939aaf5e
	Project-csharp.sln
	Project.sln
	Project.userprefs
Added spawning for chasers and snipers

9 chasers and 3 snipers will spawn every wave currently
misc changes
added leveling and skill upgrade system
Merge branch 'developer' of https://github.com/jcollins2014/Project into developer

Conflicts:
	Assets/Scenes/GameScene.unity
	Assets/Scripts/Game/Player/InputHandler.cs
	Assets/Scripts/Interface/GameGUI.cs
	ProjectSettings/InputManager.asset
Patched hao's merge with developers branch

Should run fine. Current controls are keyboard controls