fix(package): update react-router-dom to version 5.2.0

Closes #192

Author: greenkeeper[bot]

package.json

@@ -37,7 +37,7 @@
     "react-fontawesome": "^1.6.1",
     "react-redux": "^5.0.6",
     "react-router": "^4.2.0",
-    "react-router-dom": "^4.2.2",
+    "react-router-dom": "^5.2.0",
     "react-rte": "^0.15.0",
     "react-scripts": "1.0.17",
     "react-select": "^1.1.0",