Add BasicTest example

examples/BasicTest/BasicTest.ino

+#include <WS2812Serial.h>
+
+const int numled = 64;
+const int pin = 1;
+
+// Usable pins:
+//   Teensy 3.2:  1, 5, 8, 10, 20, 31
+//   Teensy 3.5:  1, 5, 8, 10, 20, 26, 32, 33, 48
+//   Teensy 3.6:  1, 5, 8, 10, 20, 26, 32, 33
+
+byte drawingMemory[numled*3];
+DMAMEM byte displayMemory[numled*8];
+
+WS2812Serial leds(numled, displayMemory, drawingMemory, pin, WS2812_GRB);
+
+#define RED    0xFF0000
+#define GREEN  0x00FF00
+#define BLUE   0x0000FF
+#define YELLOW 0xFFFF00
+#define PINK   0xFF1088
+#define ORANGE 0xE05800
+#define WHITE  0xFFFFFF
+
+// Less intense...
+/*
+#define RED    0x160000
+#define GREEN  0x001600
+#define BLUE   0x000016
+#define YELLOW 0x101400
+#define PINK   0x120009
+#define ORANGE 0x100400
+#define WHITE  0x101010
+*/
+
+void setup() {
+  leds.begin();
+}
+
+void loop() {
+  // change all the LEDs in 1.5 seconds
+  int microsec = 1500000 / leds.numPixels();
+
+  colorWipe(RED, microsec);
+  colorWipe(GREEN, microsec);
+  colorWipe(BLUE, microsec);
+  colorWipe(YELLOW, microsec);
+  colorWipe(PINK, microsec);
+  colorWipe(ORANGE, microsec);
+  colorWipe(WHITE, microsec);
+}
+
+void colorWipe(int color, int wait) {
+  for (int i=0; i < leds.numPixels(); i++) {
+    leds.setPixel(i, color);
+    leds.show();
+    delayMicroseconds(wait);
+  }
+}
+
+