Update Ember to 3.1

config/targets.js

@@ -0,0 +1,18 @@
+'use strict';
+
+const browsers = [
+  'last 1 Chrome versions',
+  'last 1 Firefox versions',
+  'last 1 Safari versions'
+];
+
+const isCI = !!process.env.CI;
+const isProduction = process.env.EMBER_ENV === 'production';
+
+if (isCI || isProduction) {
+  browsers.push('ie 11');
+}
+
+module.exports = {
+  browsers
+};