Add example use of karma (+ jasmine and chai)

templates/Angular2Spa/karma.conf.js

@@ -0,0 +1,26 @@
+module.exports = function(config) {
+  config.set({
+    frameworks: ['jasmine', 'chai'],
+    reporters: ['progress'],
+    logLevel: config.LOG_INFO,
+    browsers: ['Chrome'],
+    autoWatch: true,
+    autoWatchBatchDelay: 300,
+
+    files: [
+      // Note: you must have already run 'webpack --config webpack.config.vendor.js' for this file to exist
+      './wwwroot/dist/vendor.js',
+
+      './ClientApp/tests/*.ts',
+      './ClientApp/tests/**/*.ts'
+    ],
+
+    preprocessors: {
+      './ClientApp/tests/*.ts': ['webpack'],
+      './ClientApp/tests/**/*.ts': ['webpack']
+    },
+
+    webpack: require('./webpack.config.js'),
+    webpackMiddleware: { stats: 'errors-only' }
+  });
+};