chore(package): update babel-jest to version 19.0.0 (#23)

https://greenkeeper.io/

Author: greenkeeper[bot]

package.json

@@ -49,7 +49,7 @@
   "devDependencies": {
     "babel": "^6.1.18",
     "babel-cli": "^6.2.0",
-    "babel-jest": "^18.0.0",
+    "babel-jest": "^19.0.0",
     "babel-plugin-transform-react-jsx": "^6.1.18",
     "babel-preset-es2015": "^6.1.18",
     "babelify": "^7.2.0",