Add karma config

ui/karma.conf.js

@@ -0,0 +1,69 @@
+var webpack = require('webpack');
+var path = require('path');
+
+module.exports = function(config) {
+  config.set({
+    browsers: ['PhantomJS'],
+    singleRun: true,
+    frameworks: ['mocha', 'sinon-chai'],
+    files: [
+      'node_modules/babel-polyfill/dist/polyfill.js',
+      'spec/spec-helper.js',
+      'spec/index.js',
+    ],
+    preprocessors: {
+      'spec/spec-helper.js': ['webpack', 'sourcemap'],
+      'spec/index.js': ['webpack', 'sourcemap'],
+    },
+    reporters: ['dots'],
+    webpack: {
+      devtool: 'inline-source-map',
+      module: {
+        loaders: [
+          {
+            test: /\.js$/,
+            exclude: /node_modules/,
+            loader: 'babel-loader',
+          },
+          {
+            test: /\.css/,
+            exclude: /node_modules/,
+            loader: 'style-loader!css-loader!postcss-loader',
+          },
+          {
+            test: /\.scss/,
+            exclude: /node_modules/,
+            loader: 'style-loader!css-loader!sass-loader',
+          },
+          { // Sinon behaves weirdly with webpack, see https://github.com/webpack/webpack/issues/304
+            test: /sinon\/pkg\/sinon\.js/,
+            loader: 'imports?define=>false,require=>false',
+          },
+          {
+            test: /\.json$/,
+            loader: 'json',
+          },
+        ],
+      },
+      externals: {
+        'react/addons': true,
+        'react/lib/ExecutionEnvironment': true,
+        'react/lib/ReactContext': true
+      },
+      resolve: {
+        alias: {
+          app: path.resolve(__dirname, 'app'),
+          src: path.resolve(__dirname, 'src'),
+          chronograf: path.resolve(__dirname, 'src', 'chronograf'),
+          shared: path.resolve(__dirname, 'src', 'shared'),
+          style: path.resolve(__dirname, 'src', 'style'),
+          utils: path.resolve(__dirname, 'src', 'utils'),
+          sinon: 'sinon/pkg/sinon',
+        },
+      },
+    },
+    webpackServer: {
+      noInfo: true, // please don't spam the console when running in karma!
+    },
+  });
+};