refactor(build): Add babel-plugin-add-module-exports to allow ECMA2015 module support

Author: mtscout6

package.json

@@ -25,6 +25,7 @@
       "es2015"
     ],
     "plugins": [
+      "add-module-exports",
       [
         "transform-es2015-modules-umd",
         {
@@ -53,6 +54,7 @@
   },
   "devDependencies": {
     "babel-core": "^6.7.7",
+    "babel-plugin-add-module-exports": "^0.2.1",
     "babel-plugin-transform-es2015-modules-umd": "^6.5.0",
     "babel-preset-es2015": "^6.5.0",
     "babel-register": "^6.7.2",