JS: vgm_sensor tutorial

js/vgm_sensor/a_demo.js

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+// Add new feature to JavaScript
+// Speaker API!  (created using FFI)
+let __dirpath = "/ext/apps/Scripts";
+let speaker = load(__dirpath + "/speaker_api.js");
+// Play a sound at 440 Hz, volume 100% for 250 ms
+speaker.play(440, 1.0, 250);
+
+
+// Add new feature to JavaScript
+// Video Game Module Sensor data!  
+// (created using C Module)
+let vgm = require("vgm");
+// Wait for 1 second so sensor data can be read
+delay(1000);
+print("Pitch is", vgm.getPitch());
+print("Roll is", vgm.getRoll());
+print("Yaw is", vgm.getYaw());
+
+// Wait for up to 5 second for the yaw to change
+// at least 30 degrees.  Return the change in yaw
+// in degrees.
+print("deltaYaw is", vgm.deltaYaw(30.0, 5000));