add babel-runtime as a dep

Author: daviddias

package.json

@@ -5,6 +5,7 @@
   "main": "lib/index.js",
   "jsnext:main": "src/index.js",
   "dependencies": {
+    "babel-runtime": "^6.6.1",
     "detect-node": "^2.0.3",
     "flatmap": "0.0.3",
     "glob": "^7.0.3",
@@ -90,4 +91,4 @@
       }
     }
   }
-}
+}