Separate example scripts for dev and prod

package.json

@@ -23,7 +23,8 @@
     "transform-examples": "jscodeshift --transform transforms/module.js examples",
     "transform-test": "jscodeshift --transform transforms/module.js test",
     "transform": "npm run changecase-src && npm run transform-src && npm run transform-examples && npm run transform-test && npm run lint -- --fix",
-    "build-examples": "webpack --config examples/webpack/config.js"
+    "serve-examples": "mkdir -p build/examples && webpack --config examples/webpack/config.js --watch & serve build/examples",
+    "build-examples": "webpack --config examples/webpack/config.js --env=prod"
   },
   "main": "dist/ol.js",
   "repository": {
@@ -55,11 +56,12 @@
     "walk": "2.3.9"
   },
   "devDependencies": {
+    "babel-minify-webpack-plugin": "^0.2.0",
     "clean-css-cli": "4.1.10",
+    "copy-webpack-plugin": "^4.0.1",
     "coveralls": "3.0.0",
     "debounce": "^1.1.0",
     "eslint": "4.13.1",
-    "copy-webpack-plugin": "^4.0.1",
     "eslint-config-openlayers": "7.0.0",
     "eslint-plugin-openlayers-internal": "^3.1.0",
     "expect.js": "0.3.1",
@@ -86,12 +88,14 @@
     "phantomjs-prebuilt": "2.1.16",
     "pixelmatch": "^4.0.2",
     "proj4": "2.4.4",
+    "serve": "^6.0.6",
     "serve-files": "1.0.1",
     "sinon": "4.1.3",
     "slimerjs": "0.10.3",
     "url-polyfill": "^1.0.7",
     "webpack": "^3.5.5",
-    "webpack-dev-server": "^2.7.1"
+    "webpack-dev-server": "^2.7.1",
+    "webpack-merge": "^4.1.0"
   },
   "eslintConfig": {
     "extends": "openlayers",