chore(package): update eslint-config-airbnb-base to version 13.2.0

Closes #33

Author: greenkeeper[bot]

package.json

@@ -45,7 +45,7 @@
     "babel-register": "^6.26.0",
     "chai": "^4.1.2",
     "eslint": "^4.10.0",
-    "eslint-config-airbnb-base": "^12.1.0",
+    "eslint-config-airbnb-base": "^13.2.0",
     "eslint-plugin-import": "^2.8.0",
     "in-publish": "^2.0.0",
     "mocha": "^4.0.1",