docs: add pnpm

reslear · web-flow · commit f2bb4285002c · 2021-11-05T22:29:10.000+03:00
diff --git a/README.md b/README.md
@@ -12,6 +12,11 @@ Yarn
 $ yarn global add dotenv-cli
 ```
 
+pnpm
+```bash
+pnpm add -g dotenv-cli
+```
+
 ## Usage
 
 ```bash
