Update README.md

Author: andreibondarev

README.md

@@ -9,6 +9,7 @@ Available for paid consulting engagements! [Email me](mailto:[email protected]
 [![Docs](http://img.shields.io/badge/yard-docs-blue.svg)](http://rubydoc.info/gems/langchainrb_rails)
 [![License](https://img.shields.io/badge/license-MIT-green.svg)](https://github.com/andreibondarev/langchainrb_rails/blob/main/LICENSE.txt)
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 ## Dependencies