Update README.md

Co-authored-by: Matthew Black <m@hiremav.com>

README.md

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 # Spectre
 
-**Spectre** is a Ruby gem designed to provide an abstraction layer for generating embeddings using OpenAI's API and for performing vector-based searches. This gem simplifies the process of embedding data fields and searching within your Rails models.
+**Spectre** is a Ruby gem designed to make it easy to perform vector-based searches, generate embeddings and execute dynamic LLM prompts (Like RAG).
 
 ## Installation