Update README.md

Author: cg123

README.md

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+> [!NOTE]  
+> [Charles Goddard](https://github.com/cg123), author of `mergekit` (and person writing this note), has joined [arcee.ai](https://www.arcee.ai/). I will be continuing to develop `mergekit` with their backing and it will continue to be open source under the same license. For more words about this, see the blog post [here](https://blog.arcee.ai/arcee-and-mergekit-unite/).
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 # mergekit
 
 `mergekit` is a toolkit for merging pre-trained language models. `mergekit` uses an out-of-core approach to perform unreasonably elaborate merges in resource-constrained situations. Merges can be run entirely on CPU or accelerated with as little as 8 GB of VRAM. Many merging algorithms are supported, with more coming as they catch my attention.