Use most recent React version (facebook#477)

* Get latest version numbers of react and react-dom from npm before install.

* Run separate npm installs for react, react-dom, and react-test-renderer.

* Consolidate into a single npm install.

* Fix misplaced parenthesis, add missing semicolon.

* Add missing semicolon.

scripts/init.js

@@ -17,17 +17,10 @@ module.exports = function(appPath, appName, verbose, originalDirectory) {
  var ownPath = path.join(appPath, 'node_modules', 'react-scripts');
 
  var appPackage = require(path.join(appPath, 'package.json'));
- var ownPackage = require(path.join(ownPath, 'package.json'));
 
  // Copy over some of the devDependencies
  appPackage.dependencies = appPackage.dependencies || {};
  appPackage.devDependencies = appPackage.devDependencies || {};
- ['react', 'react-dom'].forEach(function (key) {
- appPackage.dependencies[key] = ownPackage.devDependencies[key];
- });
- ['react-test-renderer'].forEach(function (key) {
- appPackage.devDependencies[key] = ownPackage.devDependencies[key];
- });
 
  // Setup the script rules
  appPackage.scripts = {};
@@ -74,6 +67,10 @@ module.exports = function(appPath, appName, verbose, originalDirectory) {
  // TODO: having to do two npm installs is bad, can we avoid it?
  var args = [
  'install',
+ 'react',
+ 'react-dom',
+ 'react-test-renderer',
+ '--save',
  verbose && '--verbose'
  ].filter(function(e) { return e; });
  var proc = spawn('npm', args, {stdio: 'inherit'});