chore(package): update coveralls to version 3.0.4

Closes #129

Author: greenkeeper[bot]

package.json

@@ -22,7 +22,7 @@
   "license": "MIT",
   "devDependencies": {
     "concat-stream": "*",
-    "coveralls": "^2.11.2",
+    "coveralls": "^3.0.4",
     "express": "*",
     "hyperquest": "*",
     "istanbul": "^0.4.5",