Added rat
Added rats and made player more vulnerable
Merge branch 'master' of github.com:wnr/cprog13-game

# By Mathias Lindblom
# Via Mathias Lindblom
* 'master' of github.com:wnr/cprog13-game:
  getRandomTarget is now more dynamic and has a hierarchy of oepration checks

Conflicts:
	src/Engine.cpp