Add progress bar when download files using downloadtools.ps1
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hebinhuang/Mobius,Microsoft/SparkCLR,skaarthik/Mobius,dwnichols/Mobius,skaarthik/Mobius,tawan0109/SparkCLR,xiongrenyi/SparkCLR,xiongrenyi/SparkCLR,xiongrenyi/SparkCLR,cyruszhang/SparkCLR,danielli90/SparkCLR,kai-zeng/Mobius,hebinhuang/Mobius,danielli90/SparkCLR,kai-zeng/Mobius,kai-zeng/Mobius,hebinhuang/Mobius,danielli90/SparkCLR,skaarthik/Mobius,skaarthik/SparkCLR,dwnichols/Mobius,Microsoft/SparkCLR,tawan0109/SparkCLR,dwnichols/Mobius,Microsoft/SparkCLR,dwnichols/Mobius,kai-zeng/Mobius,danielli90/SparkCLR,skaarthik/SparkCLR,xiongrenyi/SparkCLR,danielli90/SparkCLR,xiongrenyi/SparkCLR,dwnichols/Mobius,skaarthik/Mobius,hebinhuang/Mobius,hebinhuang/Mobius,tawan0109/SparkCLR,hebinhuang/Mobius,tawan0109/SparkCLR,cyruszhang/SparkCLR,dwnichols/Mobius,kai-zeng/Mobius,cyruszhang/SparkCLR,skaarthik/Mobius,tawan0109/SparkCLR,skaarthik/Mobius,skaarthik/SparkCLR,kai-zeng/Mobius