adding build step for serving

package.json

 {
-    "name": "os-circular-fashion-ng",
-    "version": "0.0.1",
-    "description": "Open Source Circular Fashion Catalogue by Fabricademy",
-    "productName": "OSCircularFashion",
-    "cordovaId": "org.textile-academy.osc",
-    "author": "Fiore Basile <fiore.basile@gmail.com>",
-    "private": true,
-    "scripts": {
-        "start": "npm install -g @quasar/cli && quasar serve --history  dist/spa",
-        "build": "quasar build",
-        "postinstall": "yarn run build",
-        "test": "quasar test --unit jest",
-        "test:unit": "jest --updateSnapshot",
-        "test:unit:coverage": "jest --coverage",
-        "test:unit:watch": "jest --watch",
-        "test:unit:watchAll": "jest --watchAll",
-        "serve:test:coverage": "quasar serve test/jest/coverage/lcov-report/ --port 8788",
-        "concurrently:dev:jest": "concurrently \"quasar dev\" \"jest --watch\""
-    },
-    "dependencies": {
-        "@johmun/vue-tags-input": "^2.0.1",
-        "@quasar/extras": "^1.0.0",
-        "axios": "^0.19.0",
-        "quasar": "^1.0.0-beta.0"
-    },
-    "devDependencies": {
-        "@quasar/app": "^1.0.0-beta.0",
-        "@quasar/quasar-app-extension-testing": "^1.0.0-rc.9",
-        "@quasar/quasar-app-extension-testing-unit-jest": "^1.0.0-beta.24"
-    },
-    "engines": {
-        "node": ">= 8.9.0",
-        "npm": ">= 5.6.0",
-        "yarn": ">= 1.6.0"
-    },
-    "browserslist": [
-        "last 1 version, not dead, ie >= 11"
-    ]
-}
+  "name": "os-circular-fashion-ng",
+  "version": "0.0.1",
+  "description": "Open Source Circular Fashion Catalogue by Fabricademy",
+  "productName": "OSCircularFashion",
+  "cordovaId": "org.textile-academy.osc",
+  "author": "Fiore Basile <fiore.basile@gmail.com>",
+  "private": true,
+  "scripts": {
+    "start": "quasar serve --history  dist/spa",
+    "test": "quasar test --unit jest",
+    "test:unit": "jest --updateSnapshot",
+    "test:unit:coverage": "jest --coverage",
+    "test:unit:watch": "jest --watch",
+    "test:unit:watchAll": "jest --watchAll",
+    "serve:test:coverage": "quasar serve test/jest/coverage/lcov-report/ --port 8788",
+    "concurrently:dev:jest": "concurrently \"quasar dev\" \"jest --watch\""
+  },
+  "dependencies": {
+    "@johmun/vue-tags-input": "^2.0.1",
+    "@quasar/cli": "^1.0.0-rc.2",
+    "@quasar/extras": "^1.0.0",
+    "axios": "^0.19.0",
+    "quasar": "^1.0.0-beta.0"
+  },
+  "devDependencies": {
+    "@quasar/app": "^1.0.0-beta.0",
+    "@quasar/quasar-app-extension-testing": "^1.0.0-rc.9",
+    "@quasar/quasar-app-extension-testing-unit-jest": "^1.0.0-beta.24"
+  },
+  "engines": {
+    "node": ">= 8.9.0",
+    "npm": ">= 5.6.0",
+    "yarn": ">= 1.6.0"
+  },
+  "browserslist": [
+    "last 1 version, not dead, ie >= 11"
+  ],
+  "heroku-run-build-script": true
+}
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