fix(build): build minimized version

package.json

@@ -4,13 +4,13 @@
   "description": "Patten matching via extractor objects in JavaScript",
   "main": "./lib/match-js.min.js",
   "scripts": {
-    "build": "webpack --progress --colors --mode=dev",
+    "build": "webpack --progress --colors --mode=build",
+    "build:dev": "webpack --progress --colors --mode=dev",
     "commit": "git-cz",
     "dev": "webpack --progress --colors --watch --mode=dev",
-    "test:single": "npm run build && npm run test:single:es5 && npm run test:single:es6 && npm run test:single:coffee",
+    "test:single": "npm run build:dev && npm run test:single:es5 && npm run test:single:es6 && npm run test:single:coffee",
     "test:es5": "eslint ./test/*.spec.es5.js && mocha --colors --watch ./test/*.spec.es5.js",
     "test:es6": "mocha --compilers js:babel-core/register --colors --watch ./test/*.spec.es6.js",
-    "_test:coffee": "coffee --compile --output ./coffee-test/ ./test/*.spec.coffee && mocha --colors --watch ./coffee-test/*.spec.js",
     "test:coffee": "mocha --compilers coffee:coffee-script/register --colors --watch ./test/*.spec.coffee",
     "test:single:es5": "eslint ./test/*.spec.es5.js && mocha --colors ./test/*.spec.es5.js",
     "test:single:es6": "mocha --compilers js:babel-core/register --colors ./test/*.spec.es6.js",