replace readme with updated text about wake vision

Author: Ekhao

tensorflow_datasets/image_classification/wake_vision/README.md

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-The Wake Vision dataset for person detection.
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-The dataset contains images with annotations of whether each image contains a person. Additional annotations about perceived gender, perceived age, subject distance, lighting conditions, depictions, and specific body parts are also available.
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-The dataset has been generated by relabelling Open Images v7. See the [Wake Vision Project Github Repository](https://github.com/Ekhao/Wake_Vision) for more information.
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-We publish the annotations of this dataset under a CC BY 4.0 license. All images in the dataset are from the Open Images v7 dataset, which sourced images from Flickr listed as having a CC BY 2.0 license.
+"Wake Vision" is a large, high-quality dataset featuring over 6 million images, significantly exceeding the scale and diversity of current tinyML datasets (100x). This dataset includes images with annotations of whether each image contains a person. Additionally, it incorporates a comprehensive fine-grained benchmark to assess fairness and robustness, covering perceived gender, perceived age, subject distance, lighting conditions, and depictions. Hosted on Harvard Dataverse, it provides images, CSV files, and code to generate a Wake Vision TensorFlow Dataset. Annotations are published under a CC BY 4.0 license, and all images are sourced from the Open Images v7 dataset under a CC BY 2.0 license.