Added music21 and csound examples

examples/music21/show_in_musescore.py

@@ -0,0 +1,9 @@
+from music21 import *
+from ziffers import *
+
+# Parse Ziffers string to music21 object
+s = to_music21('(i v vi vii^dim)@(q0 e 2 1 q 012)', scale="Lydian", time="4/4")
+
+# See https://web.mit.edu/music21/doc/installing/installAdditional.html
+# Attempt to open / show the midi in MuseScore
+s.show()