Update README.md

Reference article added

Author: SL-Mar

README.md

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 QuantCoder is a  tool designed to streamline the process of searching for research articles, downloading PDFs, summarizing content, and generating QuantConnect Python algorithms based on the extracted data.
 
+For an explanation of the code, refer to article : https://medium.com/ai-advances/from-finance-papers-to-trading-algorithms-an-automated-approach-ccd2180ee306
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 ## Features
 
 - **Search Articles**: Query the CrossRef API to find relevant journal articles.