Update README.md

Author: CelliesProjects

README.md

@@ -2,9 +2,35 @@
 
 An ESP32 library to get the moon phase angle and percentage of the moon that is illuminated.
 
-## Usage:
+#### Usage:
 
 1. Download the latest release and unpack in the esp32 `libraries` folder.
 2. Restart the Arduino IDE.
 
-Some examples are included.
+#### Example code:
+````c++
+#include <moonPhase.h>
+
+moonPhase moonPhase; // include a MoonPhase instance
+
+void setup() {
+  Serial.begin(115200);
+  Serial.println();
+  Serial.println( "moonPhase simple example." );
+
+  moonData_t moon;                        // variable to receive the data
+
+  moon = moonPhase.getPhase();            // gets the current moon phase ( 1/1/1970 at 00:00:00 UTC )
+
+  Serial.print( "Moon phase angle: " );
+  Serial.print( moon.angle );             // angle is a integer between 0-360
+  Serial.println( " degrees." );
+  Serial.print( "Moon surface lit: " );
+  Serial.print( moon.percentLit * 100 );  // percentLit is a real between 0-1
+}
+
+void loop() {
+  // put your main code here, to run repeatedly:
+
+}
+````