Add Exllamav2 Link

Feels funny adding the special thanks to myself but just wanted to follow format haha

README.md

@@ -140,9 +140,9 @@ GGUF: [Link](https://huggingface.co/LoneStriker/OpenHermes-2.5-Code-290k-13B-GGU
 
 AWQ: TBA
 
-Exllama v2: TBA
+Exllama v2: [Link](https://huggingface.co/bartowski/OpenHermes-2.5-Code-290k-13B-exl2)
 
-Special Thanks to [LoneStriker](https://huggingface.co/LoneStriker) for quantising.
+Special Thanks to [LoneStriker](https://huggingface.co/LoneStriker) and [bartowski](https://huggingface.co/bartowski/) for quantising.