Update README.md

Author: sayakpaul

README.md

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 # flux-fast
-Making Flux go brrr on GPUs. With simple recipes from this repo, we enabled ~2.5x speedup on Flux.1-Schnell and Flux.1-Dev using (mainly) pure PyTorch code and a beefy GPU like H100.
+Making Flux go brrr on GPUs. With simple recipes from this repo, we enabled ~2.5x speedup on Flux.1-Schnell and Flux.1-Dev using (mainly) pure PyTorch code and a beefy GPU like H100. This repo is NOT meant to be a library or an out-of-the-box solution. So, please fork the repo, hack into the code, and share your results 🤗
 
 ## Results