add customised new lib

lib/Encoder/examples/Basic/Basic.pde

@@ -0,0 +1,29 @@
+/* Encoder Library - Basic Example
+ * http://www.pjrc.com/teensy/td_libs_Encoder.html
+ *
+ * This example code is in the public domain.
+ */
+
+#include <Encoder.h>
+
+// Change these two numbers to the pins connected to your encoder.
+//   Best Performance: both pins have interrupt capability
+//   Good Performance: only the first pin has interrupt capability
+//   Low Performance:  neither pin has interrupt capability
+Encoder myEnc(5, 6);
+//   avoid using pins with LEDs attached
+
+void setup() {
+  Serial.begin(9600);
+  Serial.println("Basic Encoder Test:");
+}
+
+long oldPosition  = -999;
+
+void loop() {
+  long newPosition = myEnc.read();
+  if (newPosition != oldPosition) {
+    oldPosition = newPosition;
+    Serial.println(newPosition);
+  }
+}