controlling the bot requires right trigger to be pressed down
fixed bug preventing forward movement
Merge branch 'master' into spyder_prototype_patch

Conflicts:
	Assets/Plugins/UnityVS/Editor/UnityVS.VersionSpecific.dll.meta
updated prefab
- added rolypoly prefab
- added SleepGas prefab
- created BotBehavior base class

The rolypoly bot is controlled like a spyder but it can only move on the ground. Pressing A spawns the SleepGas object which sends a "Sleep" message to all objects tagged as enemy within the given radius.
Merge branch 'master' into Navigation_System