Add concurrently and wait-on

package.json

@@ -29,11 +29,12 @@
     "rxjs": "6.4.0"
   },
   "devDependencies": {
+    "@nestjs/testing": "6.0.5",
     "@types/express": "4.16.1",
     "@types/jest": "24.0.11",
     "@types/node": "11.13.2",
     "@types/supertest": "2.0.7",
-    "@nestjs/testing": "6.0.5",
+    "concurrently": "^4.1.0",
     "jest": "24.7.1",
     "nodemon": "1.18.10",
     "prettier": "1.16.4",
@@ -42,7 +43,8 @@
     "ts-node": "8.0.3",
     "tsconfig-paths": "3.8.0",
     "tslint": "5.15.0",
-    "typescript": "3.4.2"
+    "typescript": "3.4.2",
+    "wait-on": "^3.2.0"
   },
   "jest": {
     "moduleFileExtensions": [