fix(package): update react-icons to version 3.0.4

Closes #32

Author: greenkeeper[bot]

package.json

@@ -28,7 +28,7 @@
     "react": "^16.2.0",
     "react-dom": "^16.2.0",
     "react-hot-loader": "^3.1.3",
-    "react-icons": "^2.2.7",
+    "react-icons": "^3.0.4",
     "react-reveal": "^1.2.1",
     "react-router-dom": "^4.2.2",
     "sinon": "^4.3.0",