fix(package): update react-intl to version 3.1.0

Closes #58

Author: greenkeeper[bot]

package.json

@@ -85,7 +85,7 @@
     "radium": "^0.18.1",
     "react": "^15.4.1",
     "react-dom": "^15.4.1",
-    "react-intl": "^2.1.2",
+    "react-intl": "^3.1.0",
     "react-redux": "^5.0.1",
     "react-router": "^3.0.0",
     "react-router-redux": "^4.0.4",