Add helpful scripts to package.json

Author: ajnsit

package.json

@@ -4,13 +4,21 @@
   "description": "A port of Elm-UI to Purescript Concur",
   "main": "index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "spago test",
+    "clean": "rimraf .cache .spago .psci_modules output .pulp-cache prod dist",
+    "build": "spago build",
+    "dev": "rimraf dist && spago build && parcel build --public-url ./ index.html",
+    "prod": "rimraf prod dist && mkdir prod && spago bundle-app --main Main --to prod/index.prod.js && java -jar closure-compiler/closure-compiler-v20190301.jar --js prod/index.prod.js --js_output_file prod/index.js && cp index.html prod/index.html && parcel build --public-url ./ prod/index.html && rimraf prod",
+    "docs": "npm run prod && rimraf docs && mv dist docs",
+    "start": "spago build && parcel index.html",
+    "watch": "spago build && parcel watch index.html"
   },
   "author": "",
   "license": "ISC",
   "devDependencies": {
     "parcel-bundler": "^1.12.4",
     "purescript": "^0.13.6",
+    "rimraf": "^3.0.0",
     "spago": "^0.14.0"
   },
   "dependencies": {