Add README

Signed-off-by: shiyu22 <shiyu.chen@zilliz.com>

README.md

@@ -8,8 +8,6 @@
 
 ### Description
 
-**Text Loader** is used to load the documents and split it to a list of text.
-
 **Text loader** is used to load files and split them into text lists. It supports loading local files (with file path), or web links (with url). 
 
 > Refer to [Recursive Characters](https://python.langchain.com/en/latest/modules/indexes/text_splitters/examples/recursive_text_splitter.html) for the operation of splitting text.
@@ -20,8 +18,6 @@
 
 ### Code Example
 
-Writing the pipeline in the simplified way
-
 ```Python
 from towhee import pipe, ops, DataCollection
 
@@ -47,6 +43,16 @@ Create the operator via the following factory method
 
 ***towhee.text_loader(chunk_size=300, source_type='file')***
 
+**Parameters:**
+
+​	***chunk_size***: int
+
+​	The size of each chunk, defaults to 300.
+
+​    ***source_type***: str
+
+​	The type of the soure, defaults to 'file', you can also set to 'url' for you url of your documentation.
+
 <br />
 
 
@@ -57,13 +63,9 @@ The operator load the documentation, then split incoming the text and return chu
 
 **Parameters:**
 
-​	***chunk_size***: int
+​	***data_src***: str
 
-​	The size of each chunk, defaults to 300.
-
-​    ***source_type***: str
-
-​	The type of the soure, defaults to 'file', you can also set to 'url' for you url of your documentation.
+​	Path or url of the document to be loaded.