add examples

examples/strumtest2.js

@@ -0,0 +1,9 @@
+setDefaultVoicings('legacy')
+const k = 0.01;
+
+stack(
+  n(stack("~ -1","~@0.5 0@1.5","1 1".late(k),"~ 2".late(k*2),"~ 3".late(k*3)))
+     .chord("G!2 Bm E ".slow(4)).anchor("G4!2 F#4 E4".slow(4)).voicing()
+     .s("gm_electric_guitar_jazz").clip(1).release(0.4).gain(0.5),
+
+).cpm(140/4).pianoroll()