Update babel plugins

Author: martijnrusschen

package.json

@@ -27,12 +27,12 @@
     "url": "https://github.com/Hacker0x01/react-datepicker/issues"
   },
   "devDependencies": {
-    "babel-core": "^6.3.15",
-    "babel-loader": "^6.2.0",
-    "babel-plugin-react-transform": "^2.0.0-beta1",
-    "babel-preset-es2015": "^6.3.13",
-    "babel-preset-react": "^6.3.13",
-    "babel-preset-stage-0": "^6.3.13",
+    "babel-core": "^6.8.0",
+    "babel-loader": "^6.2.4",
+    "babel-plugin-react-transform": "^2.0.2",
+    "babel-preset-es2015": "^6.6.0",
+    "babel-preset-react": "^6.5.0",
+    "babel-preset-stage-0": "^6.5.0",
     "chai": "^3.5.0",
     "codecov.io": "^0.1.6",
     "css-loader": "^0.23.0",