Add sample helloworld code

HelloWorld.js

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+const irisnative = require('intersystems-iris-native')
+
+var host = "localhost"
+var port = 51773
+var namespace = "USER"
+var username = "SuperUSer"
+var password = "SYS"
+
+const connection = irisnative.createConnection(
+    {host:host, port:port, ns:namespace, user:username, pwd:password}
+    )
+const iris = connection.createIris()
+console.log("Hello World! You have successfully connected to InterSystems IRIS via NodeJS.")

LICENSE

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+MIT License
+
+Copyright (c) 2019 InterSystems Corporation
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# Samples-nodejs-helloworld
+Simple hello world code to show a Node.js connection to InterSystems IRIS

intersystems-iris-native/index.js

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+var native = null;
+
+if(process.platform == "win32" && process.arch == "x64") {
+        // winx64
+	native = require('./bin/winx64/irisnative.node');  
+} else if (process.platform == "win32" && process.arch == "ia32") {
+	native = require('./bin/winx86/irisnative.node');
+} else if (process.platform == "darwin") {
+    native = require('./bin/macx64/irisnative.node');
+} else if (process.platform == "linux") {
+    let distro = getLinuxDistro()
+    console.log('platform = ' + process.platform + ': ' + distro)
+    if (distro == 'ubuntu') {
+        native = require('./bin/lnxubuntux64/irisnative.node');
+    } else if (distro = 'fedora') {
+        native = require('./bin/lnxrhx64/irisnative.node');
+    } else if (distro == 'rhx64') {
+        native = require('./bin/lnxrhx64/irisnative.node');
+    } else {
+            // test for AIX?
+        native = require('./bin/ppcx64/irisnative.node');
+    }
+}
+
+function getLinuxDistro() {
+    const { execSync } = require('child_process');
+    try {
+        let distro = execSync('lsb_release -is',{encoding:'utf8',stdio:'pipe'});
+        return distro.replace(/(\r\n\t|\n|\r\t)/gm,"").toLowerCase();
+    } catch (e) {
+        return getDistroFromFile();
+    }
+}
+
+function getDistroFromFile() {
+    const fs = require('fs')
+    try {
+        let osv = fs.readFileSync('/etc/os-release','utf8');
+        let lines = osv.split('\n');
+        let distro = lines.find((element) => { return element.substring(0,element.indexOf('=')) == 'ID' })
+        return distro.substring(3);
+    } catch (e) {
+        return null;
+    }
+}
+
+module.exports = native;

intersystems-iris-native/package.json

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+{
+    "name": "intersystems-iris-native",
+    "version": "1.0.0",
+    "description": "InterSystems IRIS Native API for Node.js",
+    "main": "index.js",
+    "scripts": {
+      "test": "echo \"Error: no test specified\" && exit 1"
+    },
+    "files": [
+      "bin"
+    ],
+    "author": "",
+    "repository": "",
+    "license": "ISC"
+  }
+

package.json

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+{
+  "name": "Samples_nodejs_helloworld",
+  "version": "1.0.0",
+  "description": "First, clone the repo. You will have two items:\r 1. `HelloWorld.js`: Sample Node.js file to connect to InterSystems\r 2. `intersystems-iris-native`: InterSystems module for NodeJS",
+  "main": "HelloWorld.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/intersystems/Samples-nodejs-helloworld.git"
+  },
+  "author": "",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/intersystems/Samples-nodejs-helloworld/issues"
+  },
+  "homepage": "https://github.com/intersystems/Samples-nodejs-helloworld#readme",
+  "dependencies": {
+    "intersystems-iris-native": "file:intersystems-iris-native"
+  }
+}