docs(quickstart): update guide systemjs.config.js

closes #1542

Author: Foxandxss

public/docs/_examples/quickstart/ts/systemjs.config.1.js

@@ -18,7 +18,7 @@
   var packages = {
     'app':                        { main: 'main.js',  defaultExtension: 'js' },
     'rxjs':                       { defaultExtension: 'js' },
-    'angular2-in-memory-web-api': { defaultExtension: 'js' },
+    'angular2-in-memory-web-api': { main: 'index.js', defaultExtension: 'js' },
   };
 
   var ngPackageNames = [
@@ -33,10 +33,21 @@
     'upgrade',
   ];
 
-  // Add package entries for angular packages
-  ngPackageNames.forEach(function(pkgName) {
+  // Individual files (~300 requests):
+  function packIndex(pkgName) {
+    packages['@angular/'+pkgName] = { main: 'index.js', defaultExtension: 'js' };
+  }
+
+  // Bundled (~40 requests):
+  function packUmd(pkgName) {
     packages['@angular/'+pkgName] = { main: pkgName + '.umd.js', defaultExtension: 'js' };
-  });
+  };
+
+  // Most environments should use UMD; some (Karma) need the individual index files
+  var setPackageConfig = System.packageWithIndex ? packIndex : packUmd;
+
+  // Add package entries for angular packages
+  ngPackageNames.forEach(setPackageConfig);
 
   var config = {
     map: map,

public/docs/_examples/systemjs.config.js

@@ -42,6 +42,7 @@
     packages['@angular/'+pkgName] = { main: pkgName + '.umd.js', defaultExtension: 'js' };
   };
 
+  // Most environments should use UMD; some (Karma) need the individual index files
   var setPackageConfig = System.packageWithIndex ? packIndex : packUmd;
 
   // Add package entries for angular packages