[docs] update

Author: tswsxk

README.md

@@ -12,15 +12,15 @@
 [![License](https://img.shields.io/github/license/bigdata-ustc/EduNLP)](LICENSE)
 [![DOI](https://zenodo.org/badge/332661206.svg)](https://zenodo.org/badge/latestdoi/332661206)
 
-NLP tools for Educational data (e.g., exercise, papers)
 
-## Introduction
 EduNLP is a library for advanced Natural Language Processing in Python and is one of the projects of EduX plan of BDAA. It's built on the very latest research, and was designed from day one to be used in real educational products.
 
 EduNLP now comes with pretrained pipelines and currently supports segment, tokenization and vertorization. It supports varies of preprocessing for NLP in educational scenario, such as formula parsing, multi-modal segment.
 
 EduNLP is commercial open-source software, released under the Apache-2.0 license.
 
+## Quickstart
+
 ### Installation
 
 Git and install by pip
@@ -40,16 +40,12 @@ pip install EduNLP
 pip install EduNLP[full]
 ```
 
-### Resource
-We will continously publish new datasets in [Standard Item Format (SIF)](https://github.com/bigdata-ustc/EduNLP/blob/master/docs/SIF4TI_CH.md) to encourage the relavant research works. The data resourses can be accessed via another EduX project [EduData](https://github.com/bigdata-ustc/EduData)
-
 ### Tutorial
 
-* Overview (TBA)
-* [Formula Parsing](https://github.com/bigdata-ustc/EduNLP/blob/master/examples/formula/formula.ipynb)
-* [Segment and Tokenization](https://github.com/bigdata-ustc/EduNLP/blob/master/examples/sif/sif.ipynb)
-* [Vectorization](https://github.com/bigdata-ustc/EduNLP/tree/master/examples/pretrain)
-* Pretrained Model (TBA)
+For more details, please refer to the full documentation ([latest](https://edunlp.readthedocs.io/en/latest) | [stable](https://edunlp.readthedocs.io/en/stable)).
+
+### Resource
+We will continously publish new datasets in [Standard Item Format (SIF)](https://github.com/bigdata-ustc/EduNLP/blob/master/docs/SIF4TI_CH.md) to encourage the relavant research works. The data resourses can be accessed via another EduX project [EduData](https://github.com/bigdata-ustc/EduData)
 
 ## Contribute