diff --git a/README.md b/README.md
index 6493223e..cf957f61 100644
--- a/README.md
+++ b/README.md
@@ -101,8 +101,8 @@ Create robust query engine pipelines with automatic cost logging. Supports fine-
 ```python
 from autollm import AutoQueryEngine
 
-# Initialize a query engine with existing vector store and service context
-vector_store = AutoVectorStore.from_defaults(
+# Initialize a query engine with existing vector store index and service context
+vector_store_index = AutoVectorStoreIndex.from_defaults(
     vector_store_type="VectorStoreIndex", documents=documents
 )
 service_context = AutoServiceContext.from_defaults(enable_cost_calculator=True)
@@ -136,7 +136,10 @@ query_engine = AutoQueryEngine.from_parameters(
     query_wrapper_prompt="Your Query Wrapper Prompt",
     enable_cost_calculator=True,
     llm_params={"model": "gpt-3.5-turbo"},
-    vector_store_params={"vector_store_type": "qdrant", "index_name": "quickstart"},
+    vector_store_params={"vector_store_type": "QdrantVectorStore", "client": qdrant_client.QdrantClient(
+    url="http://<host>:<port>"
+    api_key="<qdrant-api-key>",
+), "collection_name": "quickstart"},
     service_context_params={"chunk_size": 1024},
     query_engine_params={"similarity_top_k": 10},
 )
@@ -144,7 +147,9 @@ query_engine = AutoQueryEngine.from_parameters(
 response = query_engine.query("Why is SafeVideo AI awesome?")
 
 print(response.response)
+```
 
+```
 >> Because they redefine the movie experience by AI!
 ```
 
diff --git a/autollm/utils/markdown_processing.py b/autollm/utils/document_reading.py
similarity index 95%
rename from autollm/utils/markdown_processing.py
rename to autollm/utils/document_reading.py
index 70e3f9dd..6dfca92f 100644
--- a/autollm/utils/markdown_processing.py
+++ b/autollm/utils/document_reading.py
@@ -9,7 +9,8 @@
 logger = logging.getLogger(__name__)
 
 
-def process_and_get_documents(
+# TODO: add all files supports beside md, use SimpleDirReader
+def read_files_as_documents(
         path_or_files: Union[Path, List[Path]],
         read_as_single_doc: bool = False,
         extra_info: Optional[Dict] = None) -> List[Document]: