chore: update README

Author: ckaznable

README.md

@@ -14,21 +14,6 @@
 
 ![demo](doc/demo.gif)
 
-## Table of Contents
-
-- [Feature](#feature)
-- [Installation](#installation)
-  - [Install from Github Release](#install-from-github-release)
-  - [Install from crates.io](#install-from-cratesio)
-  - [Install from the AUR](#install-from-the-aur)
-  - [Install from Source Code](#install-from_source-code)
-- [Usage](#usage)
-- [Keyboard Navigation Instructions](#keyboard-navigation-instructions)
-- [Roadmap](#roadmap)
-- [Troubleshoot](#troubleshoot)
-- [Pokemon data source](#pokemon-data-source)
-- [License](#license)
-
 ## Feature
 
 1. All Pokemon (until Pokemon SV)