Update README.md

quad/src/virt_quad/README.md

@@ -18,7 +18,10 @@ The virt-quad has help output. Get started with:
 ./virt-quad
 ```
 
-## Using the UART Driver
+There are some good example of using this CLI in the 
+[functional tests](https://git.ece.iastate.edu/danc/MicroCART/blob/master/quad/scripts/tests/test_safety_checks.rb#L31).
+
+### Using the UART Driver
 
 The UART interface is implemented with unix FIFOs. You can treat these FIFOs
 as regular unix files. Read from uart-tx to hear with the quad is saying. Write
@@ -27,4 +30,4 @@ to uart-rx to tell the quad something.
 ```
 echo "hello world" > virt-quad-fifos/uart-rx
 cat virt-quad-fifos/uart-tx
-```
\ No newline at end of file
+```