Ignore files generated by Xcode.
Add MeshCache to cache the mesh objects.
Merge pull request #19 from Ryeeeeee/master

add explosionPool
changed enemy bullet effects
Merge branch 'master' of https://github.com/Wu-Hao/Moon3D
Merge branch 'master' of https://github.com/Wu-Hao/Moon3D
add Loading Scene
Merge branch 'master' of github.com:Wu-Hao/Moon3D

Merge with LoadingScene
made enemy bullet prettier
value adjustments
Merge pull request #20 from natural-law/master

Add MeshCache to cache the mesh objects.
Solve the problem when game go to background/foreground on android.
Merge branch 'master' of https://github.com/Wu-Hao/Moon3D
Merge pull request #21 from natural-law/master

Solve the problem when game go to background/foreground on android.
loadingRes OK
remove invalid res
merge with master
Merge pull request #22 from fusijie/master

Add LoadingScene
merge