Merge pull request #36 from CodingZeal/greenkeeper-jest-19.0.2

Update jest to version 19.0.2 🚀

Author: randycoulman

package.json

@@ -19,7 +19,7 @@
     "test:watch": "yarn jest -- --watch --notify"
   },
   "devDependencies": {
-    "jest": "^18.1.0",
+    "jest": "^19.0.2",
     "yeoman-assert": "^3.0.0",
     "yeoman-test": "^1.6.0"
   },