Update README with badge

README.md

@@ -1,4 +1,4 @@
-Works with [dotenv-vault](https://github.com/dotenv-org/dotenv-vault). Learn more at [dotenv.org/vault](https://dotenv.org/vault?r=1).
+[![dotenv-vault](https://badge.dotenv.org/works-with.svg?r=1)](https://www.dotenv.org/r/github.com/dotenv-org/dotenv-vault?r=1) 
 
 # dotenv