added shut down directions

README.md

@@ -13,7 +13,10 @@ If you need to install Docker, here are the [directions to install Docker](https
     - You should now have the SHA-256 hash of the file which is your `image id`. This is the string after `sha256:` below
     - ![image id](1.png)
 2. Run the docker container with `docker run -p 8080:8080 {image id}` at the terminal
-3. Open a browser window and use either of the following to access `HAPI FHIR`
+    - Wait about ~30 seconds and your terminal should look similar to below
+    - ![terminal after HAPI FHIR runs](2.png)
+3. Now leave the terminal running and open a browser window and use either of the following to access `HAPI FHIR`
     - `http://127.0.0.1:8080`
     - `http://localhost:8080`
-4. Enjoy using `HAPI FHIR`
+4. Enjoy using `HAPI FHIR`
+5. When you are finished using `HAPI FHIR` go back to the terminal and use `ctrl+c` to end the session