Initialize PNLineChartDataItem with y value
Initialize PNLineChartDataItem with y value

SF-BlueGuy/PNChart-Swift,SampleLiao/PNChart-Swift,SampleLiao/PNChart-Swift,meticulo3366/PNChart-Swift,kevinzhow/PNChart-Swift,bangslosan/PNChart-Swift,SF-BlueGuy/PNChart-Swift,bangslosan/PNChart-Swift,kevinzhow/PNChart-Swift,karupanerura/PNChart-Swift,datomnurdin/PNChart-Swift,SampleLiao/PNChart-Swift,petester42/PNChart-Swift,karupanerura/PNChart-Swift,datomnurdin/PNChart-Swift,petester42/PNChart-Swift,petester42/PNChart-Swift,SF-BlueGuy/PNChart-Swift,meticulo3366/PNChart-Swift,meticulo3366/PNChart-Swift,datomnurdin/PNChart-Swift,bangslosan/PNChart-Swift