Merge pull request #7 from gabrielsr/master

Atualizando
Fixing warns: imports
Merge branch 'master' of http://github.com/kfourit/bomberman-1 into
unstable

Conflicts:
	src/main/java/br/unb/unbomber/systems/ExplosionSystem.java
	src/test/java/br/unb/unbomber/systems/ExplosionSystemTestCase.java
Fixing warns: imports
Merge branch 'unstable'

Conflicts:
	src/main/java/br/unb/unbomber/systems/ExplosionSystem.java