Update README.md

Hi there! First of all, I want to say that the HuggingArtists Model is absolutely fantastic. We would love to contribute by updating the README to include information about the base model. This is to help fill in the missing details in the model card. Thank you for your consideration!

README.md

@@ -8,7 +8,9 @@ tags:
 - lm-head
 - causal-lm
 widget:
-- text: "I am"
+- text: I am
+base_model:
+- openai-community/gpt2
 ---
 
 <div class="inline-flex flex-col" style="line-height: 1.5;">
@@ -94,4 +96,4 @@ In addition, the data present in the user's tweets further affects the text gene
 
 For more details, visit the project repository.
 
-[![GitHub stars](https://img.shields.io/github/stars/AlekseyKorshuk/huggingartists?style=social)](https://github.com/AlekseyKorshuk/huggingartists)
+[![GitHub stars](https://img.shields.io/github/stars/AlekseyKorshuk/huggingartists?style=social)](https://github.com/AlekseyKorshuk/huggingartists)