Update README.md

Author: AsterDY

README.md

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 ![ABCoder](images/ABCoder.png)
 
 # Overview
-ABCoder, an general AI-oriented Code-processing **Framework**, is designed to enhance coding context for Large-Language-Model (LLM), and boost developing AI-assisted-programming applications. 
+ABCoder, an general AI-oriented Code-processing **Framework**, is designed to enhance and extends coding context for Large-Language-Model (LLM), and boost developing AI-assisted-programming applications. 
 
 
 ## Features
@@ -14,7 +14,7 @@ ABCoder, an general AI-oriented Code-processing **Framework**, is designed to en
 
 - General Writer, transforms UniAST back to codes.
 
-- Code-Retrieval-Augmented-Generation (Code-RAG), provides a set of MCP tools to help the LLM understand your codes more precisely.
+- **Code-Retrieval-Augmented-Generation (Code-RAG)**, provides a set of MCP tools to help the LLM understand code repositories precisely and locally. And it can support both in-workspace and out-of-workspace third-party libraries simultaneously -- I guess you are thinking about [DeepWiki](https://deepwiki.org) and (context7)[https://github.com/upstash/context7], but ABCoder is more reliable and confidential -- no need to wait for their services to be done, and no worry about your codes will be uploaded! 
 
 Based on these features, developers can easily implement or enhance their AI-assisted-programming applications, such as reviewing, optimizing, translating, etc.