JSPatch新增协议方法

- (CGSize) collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
{
    return CGSizeMake((screenWidth-35)/self.dataArray.count,85);
}

defineClass("NewHomeHeadView:UIView<UICollectionViewDelegateFlowLayout>", {
            collectionView_layout_sizeForItemAtIndexPath: function(collectionView, collectionViewLayout, indexPath) {
            var screenBounds = UIScreen.mainScreen().bounds();
            return {width:(screenBounds.width-35) / self.dataArray().count(), height:85};
            }
            }, {});