Add higher quality Discord badge and add a link to the license badge. (#364)

* Add higher quality Discord badge and add link 

to license.

* Use @grant's much better version :)

Author: NGTmeaty

README.md

@@ -2,8 +2,8 @@
 
 [!["Open Issues"](https://img.shields.io/github/issues-raw/codercom/code-server.svg)](https://github.com/codercom/code-server/issues)
 [!["Latest Release"](https://img.shields.io/github/release/codercom/code-server.svg)](https://github.com/codercom/code-server/releases/latest)
-[![MIT license](https://img.shields.io/badge/license-MIT-green.svg)](#)
-[![Discord](https://discordapp.com/api/guilds/463752820026376202/widget.png)](https://discord.gg/zxSwN8Z)
+[![MIT license](https://img.shields.io/badge/license-MIT-green.svg)](https://github.com/codercom/code-server/blob/master/LICENSE)
+[![Discord](https://img.shields.io/discord/463752820026376202.svg?label=&logo=discord&logoColor=ffffff&color=7389D8&labelColor=6A7EC2)](https://discord.gg/zxSwN8Z)
 
 `code-server` is [VS Code](https://github.com/Microsoft/vscode) running on a remote server, accessible through the browser.