Bump umd tansform package version

Author: mattphillips

package.json

@@ -22,7 +22,7 @@
     "babel-core": "^6.18.2",
     "babel-jest": "^19.0.0",
     "babel-plugin-add-module-exports": "^0.2.1",
-    "babel-plugin-transform-es2015-modules-umd": "^6.22.0",
+    "babel-plugin-transform-es2015-modules-umd": "^6.23.0",
     "babel-preset-es2015": "^6.18.0",
     "babel-preset-stage-0": "^6.16.0",
     "coveralls": "^2.11.15",