chore(package): update coveralls to version 2.11.11

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -33,7 +33,7 @@
     "babel-eslint": "^6.0.2",
     "babel-preset-es2015": "^6.3.13",
     "babel-register": "^6.4.3",
-    "coveralls": "^2.11.6",
+    "coveralls": "^2.11.11",
     "eslint": "^2.0.0",
     "eslint-config-dustinspecker": "^1.1.0",
     "eslint-path-formatter": "^0.1.1",