Upgrade jest to jest 19

Author: relekang

package.json

@@ -33,11 +33,11 @@
   },
   "devDependencies": {
     "async-to-gen": "^1.3.0",
-    "babel-jest": "^18.0.0",
+    "babel-jest": "^19.0.0",
     "babel-plugin-transform-async-to-generator": "^6.16.0",
     "babel-polyfill": "^6.20.0",
     "babel-preset-node6": "^11.0.0",
-    "jest": "^18.1.0",
+    "jest": "^19.0.2",
     "request-promise": "^4.1.1"
   },
   "execMap": {