[cocos2d-js] screenshot

# 화면 캡쳐 해서 부치기

            var renderer = new cc.RenderTexture(cc.winSize.width,cc.winSize.height, cc.Texture2D.PIXEL_FORMAT_RGBA8888);

renderer.setAutoDraw(true);

renderer.x = 0;

renderer.y = 0;        

renderer.beginWithClear(255, 255, 255, 0, 0 , 0);

this.visit();

renderer.end();

            

var screenSprite = new cc.Sprite(renderer.getSprite().texture);

screenSprite.setPosition((cc.winSize.width*0.5), (cc.winSize.height*0.5));

screenSprite.setFlippedY(true);            

this.addChild(screenSprite);