creep spawn and behavior init
Basic combat framework, unit health, basic attack.
Merge branch 'master' of https://github.com/Lifespark/LifeSparkDev

Conflicts:
	LifeSpark/Assets/Photon Unity Networking/Resources/PhotonServerSettings.asset
Hotfix

Commented out a line that's causing an error. Will check with pusher
about fix.
Added pathfinding

Uses unity's navmesh
Merge pull request #4 from Lifespark/master

Merge pathfinding to design branch