Update spark binary download URL (#514)
Update spark binary download URL (#514)


shimamoto/incubator-predictionio,PredictionIO/PredictionIO,takezoe/incubator-predictionio,shimamoto/incubator-predictionio,shimamoto/incubator-predictionio,takezoe/incubator-predictionio,PredictionIO/PredictionIO,takezoe/incubator-predictionio,PredictionIO/PredictionIO,shimamoto/incubator-predictionio,takezoe/incubator-predictionio