fix(demo): re-add a missing systemjs config file

demo/examples/systemjs.config.js

@@ -0,0 +1,70 @@
+(function (global) {
+  global.initSystemJS = function (recaptchaMapping, loadForms) {
+    // lock in the angular package version; do not let it float to current!
+    var ngVer = '@4.0.0';
+
+    //map tells the System loader where to look for things
+    var map = {
+      'examples': './examples/app',
+
+      '@angular': 'https://npmcdn.com/@angular', // sufficient if we didn't pin the version
+      'rxjs': 'https://npmcdn.com/rxjs@5.2.0',
+      'ts': 'https://npmcdn.com/plugin-typescript@4.0.10/lib/plugin.js',
+      'typescript': 'https://npmcdn.com/typescript@2.2.0/lib/typescript.js',
+      'ng-recaptcha': recaptchaMapping,
+    };
+
+    //packages tells the System loader how to load when no filename and/or no extension
+    var packages = {
+      'examples': { defaultExtension: 'ts' },
+      'ng-recaptcha': { main: 'index.js', defaultExtension: 'js' },
+    };
+
+    var ngPackageNames = [
+      'common',
+      'compiler',
+      'core',
+      'platform-browser',
+      'platform-browser-dynamic',
+    ];
+
+    if (loadForms) {
+      ngPackageNames.push('forms');
+    }
+
+    ngPackageNames.forEach(function (pkgName) {
+      // Add map entries for each angular package
+      // only because we're pinning the version with `ngVer`.
+      map['@angular/' + pkgName] = 'https://npmcdn.com/@angular/' + pkgName + ngVer;
+      // Add package entries for angular packages
+      packages['@angular/' + pkgName] = { main: 'bundles/' + pkgName + '.umd.js', defaultExtension: 'js' };
+    });
+
+    var config = {
+      // DEMO ONLY! REAL CODE SHOULD NOT TRANSPILE IN THE BROWSER
+      transpiler: 'ts',
+      typescriptOptions: {
+        "target": "es5",
+        "module": "system",
+        "moduleResolution": "node",
+        "sourceMap": false,
+        "declaration": true,
+        "removeComments": false,
+        "emitDecoratorMetadata": true,
+        "experimentalDecorators": true,
+        "noImplicitAny": true,
+        "listFiles": false,
+        "noLib": false
+      },
+      meta: {
+        'typescript': {
+          "exports": "ts"
+        }
+      },
+      map: map,
+      packages: packages
+    }
+
+    System.config(config);
+  };
+})(this);