Create README.md

README.md

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+---
+license: apache-2.0
+datasets:
+- trl-lib/tldr
+base_model:
+- google/gemma-3-270m-it
+pipeline_tag: summarization
+---
+
+This is a fine-tune of gemma, trained using GRPO with a reward function to incentivise ~40 char outputs beginning with "I" such that it outputs TL;DR summaries for reddit comments.