fix api_difference & add README.md

[hd9568]

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• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.BCELoss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.BCEWithLogitsLoss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.CosineEmbeddingLoss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.CrossEntropyLoss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.HingeEmbeddingLoss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.KLDivLoss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.L1Loss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.MSELoss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.MarginRankingLoss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.MultiLabelMarginLoss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.MultiLabelSoftMarginLoss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.MultiMarginLoss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.NLLLoss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.PoissonNLLLoss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.SmoothL1Loss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.SoftMarginLoss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.TripletMarginLoss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.functional.binary_cross_entropy.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.functional.binary_cross_entropy_with_logits.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.functional.cosine_embedding_loss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.functional.cross_entropy.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.functional.hinge_embedding_loss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.functional.kl_div.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.functional.l1_loss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.functional.margin_ranking_loss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.functional.mse_loss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.functional.multi_margin_loss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.functional.multilabel_margin_loss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.functional.multilabel_soft_margin_loss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.functional.nll_loss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.functional.poisson_nll_loss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.functional.soft_margin_loss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/api_difference/torch_more_args/torch.nn.functional.triplet_margin_loss.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/deprecated/README.md: 点击预览
• docs/guides/model_convert/convert_from_pytorch/tools/README.md: 点击预览

[zhwesky2010]

这个是之前的工具吗

[hd9568]

是的，旧版README