Add CesarSound code.

lib/Rotary/examples/Polling/Polling.ino

@@ -0,0 +1,25 @@
+/*
+    Rotary Encoder - Polling Example
+    
+    The circuit:
+    * encoder pin A to Arduino pin 2
+    * encoder pin B to Arduino pin 3
+    * encoder ground pin to ground (GND)
+    
+*/
+
+#include <Rotary.h>
+
+Rotary r = Rotary(2, 3);
+
+void setup() {
+  Serial.begin(9600);
+  r.begin(true);
+}
+
+void loop() {
+  unsigned char result = r.process();
+  if (result) {
+    Serial.println(result == DIR_CW ? "Right" : "Left");
+  }
+}