chore(package): update rollup-plugin-babel-minify to version 6.1.0

Closes #22

Author: greenkeeper[bot]

package.json

@@ -42,7 +42,7 @@
     "rimraf": "^2.6.2",
     "rollup": "^0.64.0",
     "rollup-plugin-babel": "^4.0.0-beta.4",
-    "rollup-plugin-babel-minify": "^5.0.0",
+    "rollup-plugin-babel-minify": "^6.1.0",
     "rollup-plugin-node-resolve": "^3.3.0"
   },
   "author": "Can Göktas <can.goektas@gmail.com>",