modify android.mk
fix some bug and leaks
fix conflict of android.mk
fix engine particle
fix comments
Update README.md
Update README.md
Update README.md
Merge pull request #40 from Wu-Hao/patch-1

Patch 1
add license and credits
Merge github.com:chukong/EarthWarrior3D
Merge pull request #41 from Ryeeeeee/master

add license and credits
Update README.md

fix spelling
Merge github.com:chukong/EarthWarrior3D
update to rc2
Merge pull request #43 from Ryeeeeee/master

update to rc2
fix orientation problem
Merge pull request #44 from Ryeeeeee/master

fix orientation problem
Update Mesh.cpp

added #include <cctype> to get it compiled on windows 7 VS 2013, now i get a runtime error...
update to 3.0 final