Merge pull request #23 from RaoZiJian/myMaster

modified attack resources.
fix monster death position bug add death animation
Merge branch 'master' of https://github.com/yuye-liu/cocostudioSampleGmae
add laser class and resources.
Merge branch 'master' of https://github.com/yuye-liu/cocostudioSampleGmae into myMaster