Add pipeline tag, license, and remove redundant section

README.md

@@ -1,7 +1,9 @@
 ---
 library_name: transformers
 tags:
-  - custom_generate
+- custom_generate
+license: mit
+pipeline_tag: text-generation
 ---
 
 # LagKV Cache
@@ -48,4 +50,5 @@ gen_out = model.generate(
     trust_remote_code=True,
 )
 print(tokenizer.batch_decode(gen_out.sequences, skip_special_tokens=True))
-assert "lagkvcache" in str(type(gen_out.past_key_values)).lower()
+assert "lagkvcache" in str(type(gen_out.past_key_values)).lower()
+```