chore(package): update babel-register to version 6.18.0 (#157)

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -28,7 +28,7 @@
     "@cycle/xstream-adapter": "^3.0.1",
     "assert": "^1.4.1",
     "babel-preset-es2015": "^6.16.0",
-    "babel-register": "^6.9.0",
+    "babel-register": "^6.18.0",
     "babelify": "^7.3.0",
     "browserify": "^13.0.1",
     "cli-release": "^1.0.4",