Update README.md

Author: supriyar

README.md

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 # torchao
 
+**Note: This repository is currently under heavy development - if you have suggestions on the API or use-cases you'd like to be covered, please open an github issue or reach out. We'd love to hear about how you're using the APIs.
+**
+
 The torchao package contains apis and workflows used to apply AO techniques like quantization and pruning to models using only native pytorch.
 
 ## Installation