malinschlueter/my_dataset: some default

malinschlueter 0d2e2c6431 [DATALAD RUNCMD] Convert the third image		7 月之前
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chinstrap_01_grey.jpg	20ddbb063a [DATALAD RUNCMD] converted the first image to greyscale	7 月之前
king_01_grey.jpg	0d2e2c6431 [DATALAD RUNCMD] Convert the third image	7 月之前