chore(package): update coveralls to version 2.13.2

Author: greenkeeper[bot]

package.json

@@ -40,7 +40,7 @@
     "babel-preset-node6": "11.0.0",
     "eslint": "4.5.0",
     "chai": "4.1.2",
-    "coveralls": "2.13.1",
+    "coveralls": "2.13.2",
     "global": "4.3.2",
     "mocha": "3.5.0",
     "husky": "0.13.4",