chore(package): update danger to version 3.1.0

Author: greenkeeper[bot]

package.json

@@ -116,7 +116,7 @@
     "babel-plugin-transform-remove-console": "6.8.5",
     "babel-preset-react-native": "4.0.0",
     "bugsnag-sourcemaps": "1.0.1",
-    "danger": "3.0.6",
+    "danger": "3.1.0",
     "danger-plugin-yarn": "1.2.0",
     "directory-tree": "2.0.0",
     "eslint": "4.16.0",