DistNumbersView

可冻结行和列的表格视图，类似Numbers(Mac)和Excel(Windows)
usage:
_numbersView.columnsToFreeze = 2;
_numbersView.itemMaxWidth = 300;
_numbersView.itemMinWidth = 100;
_numbersView.rowHeight = 50;

_numbersView.isFreezeFirstRow = YES;
_numbersView.delegate = self;
_numbersView.dataSource = self;
[_numbersView registerNib:[UINib nibWithNibName:@"SampleCollectionCell" bundle:nil] forCellWithReuseIdentifier:SampleCollectionCellReuseIdentifier];
//添加边界线

// _numbersView.layer.borderColor = [UIColor lightGrayColor].CGColor;
// _numbersView.layer.borderWidth = 0.5;

[_numbersView reloadData];