chore(package): update react-devtools to version 4.7.0

Closes #147

Author: greenkeeper[bot]

package.json

@@ -100,7 +100,7 @@
     "prop-types": "^15.5.10",
     "raf": "^3.3.2",
     "react-addons-test-utils": "^15.5.1",
-    "react-devtools": "^3.0.0",
+    "react-devtools": "^4.7.0",
     "react-test-renderer": "^16.0.0",
     "redux-logger": "^3.0.6",
     "remote-redux-devtools": "^0.5.12",