update readme and packages

package.json

@@ -27,11 +27,11 @@
   "dependencies": {},
   "devDependencies": {
     "babel-core": "~6.24.1",
-    "babel-loader": "~6.4.1",
+    "babel-loader": "~7.0.0",
     "babel-preset-env": "~1.4.0",
     "babili": "~0.0.12",
     "babili-webpack-plugin": "~0.0.11",
-    "http-server": "~0.9.0",
+    "http-server": "~0.10.0",
     "webpack": "~2.4.1"
   }
 }

readme.md

@@ -11,6 +11,9 @@ The built and transpiled files can be found in the ```/dist``` folder.
 Webpack only marks unused code at bundling and leaves the removing part to minifiers.
 This is why all the code is included in development builds in contrary to Rollup.
 
+If you want a more detailed explanation,
+[read this article](https://blog.craftlab.hu/how-to-do-proper-tree-shaking-in-webpack-2-e27852af8b21).
+
 ### Webpack + Babel + UglifyJS
 
 Can only remove unused functions and variables.