added badges in readme

Author: zweack

README.md

@@ -1,2 +1,8 @@
 # Navigator
-VS Code extension for code navigation
+![Visual Studio Marketplace Downloads](https://img.shields.io/visual-studio-marketplace/d/zweack.vsc-navigator?style=for-the-badge)
+[![GitHub license](https://img.shields.io/github/license/zweack/Navigator?style=for-the-badge)](https://github.com/zweack/Navigator/blob/dev/LICENSE)
+[![GitHub stars](https://img.shields.io/github/stars/zweack/Navigator?style=for-the-badge)](https://github.com/zweack/Navigator/stargazers)
+[![GitHub forks](https://img.shields.io/github/forks/zweack/Navigator?style=for-the-badge)](https://github.com/zweack/Navigator/network)
+[![GitHub issues](https://img.shields.io/github/issues/zweack/Navigator?style=for-the-badge)](https://github.com/zweack/Navigator/issues)
+
+Browser like back & forward navigation buttons for VS Code in status bar & menu bar.