Merge pull request #1118 from bravesasha/patch-1

docs: readme

Author: amvanbaren

README.md

@@ -3,6 +3,7 @@
 [![Gitpod Ready-to-Code](https://img.shields.io/badge/Gitpod-ready--to--code-blue?logo=gitpod)](https://gitpod.io/#https://github.com/eclipse/openvsx)
 [![Contribute](https://www.eclipse.org/che/contribute.svg)](https://workspaces.openshift.com#https://github.com/eclipse/openvsx)
 [![Slack workspace](https://img.shields.io/badge/Slack-Join%20workspace-4A154B?logo=slack&logoColor=white)](https://join.slack.com/t/openvsxworkinggroup/shared_invite/zt-2y07y1ggy-ct3IfJljjGI6xWUQ9llv6A)
+[![License](https://img.shields.io/github/license/eclipse/openvsx)](https://github.com/eclipse/openvsx/blob/master/LICENSE)
 [![CI](https://github.com/eclipse/openvsx/workflows/CI/badge.svg)](https://github.com/eclipse/openvsx/actions?query=workflow%3ACI)
 
 Open VSX is a [vendor-neutral](https://projects.eclipse.org/projects/ecd.openvsx) open-source alternative to the [Visual Studio Marketplace](https://marketplace.visualstudio.com/vscode). It provides a server application that manages [VS Code extensions](https://code.visualstudio.com/api) in a database, a web application similar to the VS Code Marketplace, and a command-line tool for publishing extensions similar to [vsce](https://code.visualstudio.com/api/working-with-extensions/publishing-extension#vsce).