Updating VERSION and cocos2d.h to 3.3.7. Will tag this commit as the 3.3.7 commit.
build docs script updated
animation manager doc update
various actions documentation update
effects documentation update
light doc update
package doc updates
various nodes doc update
physics doc update
tilemap docs update
shader, texture, renderer docs update
director docs update
scene & transition docs update
touch docs update
Merge branch 'v3.3' of github.com:cocos2d/cocos2d-swift into v3.3-api-ref