updated README

README.md

@@ -19,7 +19,11 @@ widget:
 
 # gpt-neox-japanese-2.7b
 
-**This model will be available as soon as the [open PR](https://github.com/huggingface/transformers/pull/18814) is merged.**
+**The [open PR](https://github.com/huggingface/transformers/pull/18814) is merged on 2022/9/14.**
+You can use this model with the latest transformers. Please install from the code like below.
+```
+pip install git+https://github.com/huggingface/transformers
+```
 
 This repository provides a 2.7B-parameter Japanese [GPT-NeoX](https://github.com/EleutherAI/gpt-neox)-based model. The model was trained by [ABEJA, Inc](https://www.abejainc.com/)