Update README and dependencies

README.md

@@ -50,7 +50,7 @@ $ source venv/bin/activate
 ### Install dependencies
 
 ```shell
-$ pip install --upgrade pip
+$ pip install --upgrade pip wheel
 $ pip install --requirement=requirements.txt
 ```
 

requirements.txt

@@ -20,5 +20,4 @@ regex==2020.11.13
 six==1.15.0
 sqlparse==0.4.1
 toml==0.10.2
-typed-ast==1.4.2
 typing-extensions==3.7.4.3