Add docusaurus-init package and update copy-examples.js (#70)

* Add docusaurus-init package and update copy-examples.js

* Use yarn by default

docusaurus-init/initialize.js

@@ -0,0 +1,55 @@
+#!/usr/bin/env node
+
+/**
+ * Copyright (c) 2017-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+const shell = require("shelljs");
+const chalk = require("chalk");
+const fs = require("fs");
+
+const CWD = process.cwd();
+
+let useYarn = false;
+if (shell.which("yarn")) {
+  useYarn = true;
+}
+
+if (fs.existsSync(CWD + "/website")) {
+  console.error(chalk.yellow("Website folder already exists.\n"));
+  process.exit(1);
+}
+
+shell.cd(CWD);
+
+shell.mkdir("website");
+
+console.log(chalk.green("Website folder created!\n"));
+
+shell.cd("website");
+
+console.log(
+  chalk.yellow("Installing latest version of Docusaurus in website.\n")
+);
+
+const packageContent = { scripts: { examples: "docusaurus-examples" } };
+fs.writeFileSync(CWD + "/website/package.json", JSON.stringify(packageContent));
+
+if (useYarn) {
+  shell.exec("yarn add docusaurus --dev");
+} else {
+  shell.exec("npm install docusaurus --save-dev");
+}
+
+console.log(chalk.green("Docusaurus installed in website folder!\n"));
+
+if (useYarn) {
+  shell.exec("yarn run examples");
+} else {
+  shell.exec("npm run examples");
+}

docusaurus-init/package.json

@@ -0,0 +1,12 @@
+{
+  "name": "docusaurus-init",
+  "version": "1.0.0-alpha.0",
+  "preferGlobal": true,
+  "bin": {
+    "docusaurus-init": "initialize.js"
+  },
+  "dependencies": {
+    "chalk": "^2.1.0",
+    "shelljs": "^0.7.8"
+  }
+}