Merge pull request react-toolbox#1066 from just-boris/patch-1

Declare immutability-helper as direct dependency

Author: javivelasco

package.json

@@ -38,6 +38,7 @@
   "dependencies": {
     "classnames": "^2.2.5",
     "core-js": "^2.4.0",
+    "immutability-helper": "^2.0.0",
     "normalize.css": "^4.2.0",
     "react-css-themr": "^1.7.0"
   },
@@ -115,8 +116,6 @@
   },
   "license": "MIT",
   "peerDependencies": {
-    "classnames": "^2.2.0",
-    "immutability-helper": "^2.0.0",
     "react": "^0.14 || ~15.4.0",
     "react-addons-css-transition-group": "^0.14.0 || ~15.4.0",
     "react-dom": "^0.14.0 || ~15.4.0"