Merge branch 'master' into zz_local
Merge pull request #54 from alexwolfwang/master

update NewMapScene
Merge pull request #55 from alexwolfwang/master

create new method in NewMapScene
Merge pull request #56 from alexwolfwang/master

update method of NewMapScene
change file name
small change
PlayingScene Bug Fixed

PlayingScene Bug Fixed
Merge pull request #57 from alexwolfwang/master

delete the useless import
Merge branch 'master' into zz_local
Build Tower

Build Tower
Merge branch 'zz_local'
Merge pull request #1 from zhaozheid/master

merge new to me