set particle to deactive default

Signed-off-by: rainfiel <rainfiel@gmail.com>
Merge branch 'master' of ssh://oa.ejoy.com/ejoy2d
update particle depend on visibility

Signed-off-by: rainfiel <rainfiel@gmail.com>
loop particle will keep status at the last frame
particle support positionType

Signed-off-by: rainfiel <rainfiel@gmail.com>
Merge branch 'master' of ssh://oa.ejoy.com/ejoy2d

Conflicts:
	ejoy2d/particle.lua
Merge branch 'master' of ssh://oa.ejoy.com/ejoy2d

Conflicts:
	ejoy2d/particle.lua
add particle doc

Signed-off-by: rainfiel <rainfiel@gmail.com>
fix particle size error

Signed-off-by: rainfiel <rainfiel@gmail.com>
update particle lua for size error

Signed-off-by: rainfiel <rainfiel@gmail.com>
components limit in a single frame raise to 0xffff

Signed-off-by: rainfiel <rainfiel@gmail.com>
fix scissor error when position out of screen

Signed-off-by: rainfiel <rainfiel@gmail.com>
when scissor position >= screen size, scissor area is (0,0)

Signed-off-by: rainfiel <rainfiel@gmail.com>
bugfix: random
Merge branch 'master' of github.com:cloudwu/ejoy2d into public