std::string str_ext = skeletonDataFile.substr(skeletonDataFile.length() - 5, 5);
if (str_ext.compare(".skel") == 0)
{
	spSkeletonBinary* binary = spSkeletonBinary_create(_atlas);
	binary->scale = scale;
	spSkeletonData* skeletonData = spSkeletonBinary_readSkeletonDataFile(binary, skeletonDataFile.c_str());
	CCASSERT(skeletonData, ("Error reading skeleton data file." +  atlasFile).c_str());
    spSkeletonBinary_dispose(binary);
	setSkeletonData(skeletonData, true);
}
else 
{
	spSkeletonJson* json = spSkeletonJson_create(_atlas);
	json->scale = scale; 
	spSkeletonData* skeletonData = spSkeletonJson_readSkeletonDataFile(json, skeletonDataFile.c_str());
	CCASSERT(skeletonData, ("Error reading skeleton data file." +  atlasFile).c_str());
	spSkeletonJson_dispose(json);
	setSkeletonData(skeletonData, true);
}