fix(build): tree-shaking is now working with latest release of webpack 2

Author: mariuszm

.babelrc

@@ -1,6 +1,6 @@
 {
   "presets": [
-    ["es2015", "stage-2"]
+    ["es2015", { "modules": false }]
   ],
   "env": {
     "test": {

package.json

@@ -20,15 +20,14 @@
   },
   "devDependencies": {
     "autoprefixer": "^6.5.3",
-    "babel-core": "^6.18.2",
-    "babel-loader": "^6.2.8",
+    "babel-core": "^6.22.1",
+    "babel-loader": "^6.2.10",
     "babel-plugin-__coverage__": "^11.0.0",
-    "babel-preset-es2015": "^6.18.0",
-    "babel-preset-stage-2": "^6.18.0",
     "bootstrap-loader": "2.0.0-beta.15",
     "clean-webpack-plugin": "^0.1.14",
     "css-loader": "^0.26.0",
     "eslint": "^3.10.2",
+    "babel-preset-es2015": "^6.22.0",
     "eslint-config-angular": "^0.5.0",
     "eslint-loader": "^1.6.1",
     "eslint-plugin-angular": "^1.4.1",
@@ -53,10 +52,10 @@
     "sass-loader": "^4.0.2",
     "style-loader": "^0.13.1",
     "url-loader": "^0.5.7",
-    "webpack": "^2.1.0-beta.27",
-    "webpack-dev-server": "^2.1.0-beta.11",
     "webpack-merge": "^0.17.0",
     "webpack-validator": "^2.2.9"
+    "webpack": "^2.2.1",
+    "webpack-dev-server": "^2.3.0",
   },
   "dependencies": {
     "angular": "^1.5.8",