fix(package): update react to version 16.8.6

Closes #9

Author: greenkeeper[bot]

package.json

@@ -10,7 +10,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "react": "^15.2.0",
+    "react": "^16.8.6",
     "react-dom": "^15.2.0",
     "react-redux": "^5.0.2",
     "react-router": "^3.0.2",