Add pipeline tag, license and library name

This PR adds the `pipeline_tag`, `license` and `library_name`, which makes the model discoverable via the filters on the model hub. Besides that, it ensures that the "how to use" button appears on the top right of the page.

README.md

@@ -3,7 +3,11 @@ datasets:
 - EleutherAI/pile
 language:
 - en
+library_name: transformers
+license: mit
+pipeline_tag: text-generation
 ---
+
 # Model Card
 
 This model is pretrained Mamba model. The goal of this model is to provide a quality reference for the Based architecture. 
@@ -40,4 +44,4 @@ Please consider citing this paper if you use our work:
 }
 ```
 
-Please reach out to [email protected], [email protected], and [email protected] with questions.
+Please reach out to [email protected], [email protected], and [email protected] with questions.