add hook and uniform parser

.pre-commit-config.yaml

 repos:
   - repo: git@codechina.csdn.net:csdn/skill_tree_hook.git
-    rev: c1fbfe8805a7754a9d5c85bcf0b112ddad086075
+    rev: 450097b0e3d8b23d98a9ecc61bb104bb9124876b
     hooks:
       - id: pre-commit
         verbose: true
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data/1.rust初阶/1.预备知识/1.rust简介/config.json

 {
   "node_id": "rust-7c394f164d8f44519521f03db08a1321",
-  "keywords": [],
+  "keywords": ["rust", "基本语法", "hello"],
   "children": [
     {
       "Rust的起源": {

main.py

 # -*- coding: utf-8 -*-
-from json import load
-from src.tree import TreeWalker, load_json, dump_json
+from skill_tree.tree import TreeWalker
 
-import os
-import re
 
 if __name__ == '__main__':
     walker = TreeWalker("data", "rust", "rust")

requirement.txt

 pre_commit~=2.16.0
 GitPython~=3.1.24
+skill-tree-parser~=0.0.3
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