code & code-insiders commands (#21)

* code & code-insiders commands

add `code` command option

* Update README.md

Co-authored-by: Aaron Wislang <[email protected]>

Author: SalehAlbuga

9-vscode-django-postgres-dev-container/README.md

@@ -19,11 +19,18 @@ You'll need the following tools installed on your local machine:
 
 1. On a terminal, clone the sample app and open using Visual Studio Code:
 
-    ```cmd
+   ```cmd
     git clone https://github.com/Microsoft/python-sample-tweeterapp
     cd python-sample-tweeterapp
+    ```
+    and:
+    ```cmd
     code .
     ```
+    or if you are using [Visual Studio Code Insiders](https://code.visualstudio.com/insiders/):
+    ```cmd
+    code-insiders .
+    ```
 
 1. Click the `Reopen in Container` prompt, or press `F1` and select the `Reopen folder in dev container` command.