chore(webpack): update webpack deps to 2.1.0-beta.22 (#2011)

Author: TheLarkInn

package.json

@@ -103,7 +103,7 @@
     "typedoc": "^0.4.2",
     "typescript": "2.0.2",
     "url-loader": "^0.5.7",
-    "webpack": "2.1.0-beta.19",
+    "webpack": "^2.1.0-beta.22",
     "webpack-dev-server": "^2.1.0-beta.3",
     "webpack-md5-hash": "0.0.5",
     "webpack-merge": "^0.14.0"