add examples from README to examples folder

examples/encode.js

@@ -0,0 +1,25 @@
+const { Encoder, Tracker } = require('../dist');
+const encoder = new Encoder('Server Name', 2, 3); //server name, version high, version low
+
+const trackers = [];
+
+const tracker = new Tracker(1, 'Tracker 1'); // id, name
+tracker.setPos(1.0, 1.0, 1.0); // x, y, z
+
+trackers.push(tracker);
+
+const timestamp = 1;
+
+// these two calls return an array of Buffers due to potential splitting that might take place because of max UDP packet size
+const dataPackets = encoder.getDataPackets(timestamp, trackers);
+const infoPackets = encoder.getInfoPackets(timestamp, trackers);
+
+dataPackets.forEach((dataPacket) => {
+  console.log('send packet somehow');
+  console.log(dataPacket);
+});
+
+infoPackets.forEach((infoPacket) => {
+  console.log('send packet somehow');
+  console.log(infoPacket);
+});