fix(package): update ajv to version 6.5.3

greenkeeper[bot] · greenkeeper[bot] · commit e403ba0fcad8 · 2018-08-17T16:32:16.000Z
Closes #92
diff --git a/package.json b/package.json
@@ -44,7 +44,7 @@
     }
   },
   "dependencies": {
-    "ajv": "^5.2.2",
+    "ajv": "^6.5.3",
     "yargs": "^9.0.1"
   },
   "engines": {
