added moment as dev dependency, and added more configuration

Author: jcguarinpenaranda

package.json

@@ -5,10 +5,10 @@
   "main": "out/index.js",
   "types": "out/index.d.ts",
   "scripts": {
-    "test": "jest --ci --silent",
+    "test": "jest --ci --silent --maxWorkers=2",
     "build": "tsc",
     "watch": "tsc -w",
-    "prepublish": "tsc"
+    "prepublishOnly": "tsc"
   },
   "keywords": [],
   "author": "Juan Camilo Guarín P",
@@ -17,6 +17,7 @@
     "@types/jest": "21.1.10",
     "@types/parse": "2.4.4",
     "jest": "22.4.2",
+    "moment": "^2.21.0",
     "parse": "1.11.0",
     "ts-jest": "21.1.3",
     "tslint": "5.8.0",
@@ -29,7 +30,6 @@
       "<rootDir>/src",
       "<rootDir>/test"
     ],
-    "mapCoverage": true,
     "collectCoverage": true,
     "transform": {
       "^.+\\.tsx?$": "<rootDir>/node_modules/ts-jest/preprocessor.js"