read write switch stream test, .npmrc for publishing

test/rwSwitchStream.js

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+const nodeAudio = require('../index.js');
+      EventEmitter = require('events'),
+      emitter = new EventEmitter();
+
+/* Set up keyboard input for recording */
+var stdin = process.stdin;
+stdin.setRawMode( true );
+stdin.resume();
+stdin.setEncoding( 'utf8' );
+
+let recording = false;
+
+let inputDevice;
+let outputDevice;
+
+const chunks = [];
+emitter.on("data", (int16Arr) => {
+    if (recording) {
+        console.log(`Captured ${int16Arr.length} frames`);
+        chunks.push(int16Arr);
+    }
+});
+
+const setStreams = () => {
+
+    const defaultInput = nodeAudio.core.GetDefaultInputDevice();
+    const defaultOutput = nodeAudio.core.GetDefaultOutputDevice();
+    console.log(`Input: ${defaultInput}, Output: ${defaultOutput}`);
+
+    if (inputDevice !== defaultInput) {
+        inputDevice = defaultInput;
+        nodeAudio.core.CloseInputStream(inputDevice);
+        nodeAudio.core.OpenInputStream(inputDevice);
+    }
+
+    if (outputDevice !== defaultOutput) {
+        outputDevice = defaultOutput;
+        nodeAudio.core.CloseOutputStream(outputDevice);
+        nodeAudio.core.OpenOutputStream(outputDevice);
+    }
+}
+
+const stopRecording = () => {
+    recording = false;
+    pcmAudio = nodeAudio.utils.mergeChunks(chunks);
+    chunks.length = 0;
+
+    /* Play recorded audio */
+    console.log("Playing recorded audio...");
+    nodeAudio.core.WriteToOutputStream(pcmAudio.buffer);
+}
+
+nodeAudio.core.Initialize(emitter.emit.bind(emitter));
+
+/* Check every 2 seconds for new audio device */
+setInterval(setStreams, 2000);
+
+/* Toggle recorder with 'r' */
+stdin.on( 'data', function( key ) {
+    if (key == "r") {
+        if (recording) {
+            stopRecording();
+        } else {
+            recording = true;
+        }
+    }
+});
+
+setTimeout(() => {
+    nodeAudio.core.Terminate();
+    process.exit();
+}, 30000);