chore(package): update babel-plugin-add-module-exports to version 0.3.1

Closes #54

Author: greenkeeper[bot]

package.json

@@ -46,7 +46,7 @@
     "babel-cli": "^6.26.0",
     "babel-core": "^6.26.3",
     "babel-eslint": "^8.2.5",
-    "babel-plugin-add-module-exports": "^0.2.1",
+    "babel-plugin-add-module-exports": "^0.3.1",
     "babel-plugin-transform-es2015-template-literals": "^6.22.0",
     "babel-plugin-transform-replace-object-assign": "^1.0.0",
     "babel-preset-airbnb": "^2.5.1",