Update readme.md

readme.md

 Fast imagenet training on the TU Delft HPC with PyTorch using TFRecords and DALI.
 
-Tested with PyTorch 1.7.0.
-NVIDIA DALI required, install from: https://www.github.com/NVIDIA/DALI.
+Tested with PyTorch 1.7.0 and NVIDIA DALI 0.27.0.
+Install instructions for DALI: https://www.github.com/NVIDIA/DALI.
 
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