Update faust example

Author: jarmitage

examples/faust/hello-osc/process.dsp

@@ -5,6 +5,17 @@
   Intelligent Instruments Lab 2022
 """
 
+"""
+Create a file called `process.dsp` and add the following code
+
+```
+import("stdfaust.lib");
+process = no.noise*hslider("level",0,0,1,0.01);
+```
+
+Open this in FaustLive or compile it via faust2X
+"""
+
 import random
 
 from iipyper import OSC, run, repeat