Merge pull request #24 from brysgo/greenkeeper/mocha-pin-6.0.2

fix: pin mocha to 6.0.2

Author: brysgo

package.json

@@ -32,6 +32,6 @@
     "babel-preset-es2015": "^6.1.18",
     "babel-register": "^6.2.0",
     "dotenv-expand": "^5.1.0",
-    "mocha": "^6.0.0"
+    "mocha": "6.0.2"
   }
 }