Merge pull request #4 from gabrielsr/master

Atualizando
Create BombSystemTestCaseG10.java
Atualizando movimentSystem e throw system
Merge pull request #51 from nmschumacher/master

Create BombSystemTestCaseG10.java
thowsystemtestcase0
Creating a visual component and adding it to the creation of PowerUps
and Diseases.
Merge branch 'master' of https://github.com/gabrielsr/bomberman.git
Change method visibility so the Test can compile.
StageSpec now has a list of events (must for test purpose)
Timer no more set the id of it event 
Inserting Draw component in explosion.
Merge pull request #5 from gabrielsr/master

Atualizando
primeiros testes do powerUp - atualizacao do movimentSystem - atualizacao do throw
Timer should set the ownerId of events. Without it some tests breaks.
Added a logger to base system.
Make ActionCommandEvent not emutable so we can create it in a json stage
spec file
a created bomb has a draw component
Including BombSystem + ExplosionSystem test case. 
Including test for a BUG when two explosions happens together
Including all Systems in the GameMatch
Protecting timeSystem from a nullpointer when the timer has no effect.
diseaseTesteCase
Creating enpty constructors so a instance can be create by json reader
in libgdx