add script

.gitignore

@@ -1,4 +1,4 @@
 node_modules/
 out/
 test*.js
-
+.DS_Store

package.json

@@ -6,7 +6,8 @@
   "scripts": {
     "build-es2017": "git remote remove origin && git remote add origin \"[email protected]:$TRAVIS_REPO_SLUG.git\" && git fetch --quiet origin && git checkout --quiet es2017 && mkdir \"out/2017\" && cp -R img \"out/2017\" && ecmarkup --verbose spec.html out/2017/index.html && git checkout --quiet test-travis",
     "build-master": "mkdir out && cp -R img out && ecmarkup --verbose spec.html out/index.html --css out/ecmarkup.css --js out/ecmarkup.js",
-    "build": "npm run clean && npm run build-master",
+    "build-docs": "mkdir docs && cp -R img docs && ecmarkup --verbose spec.html docs/index.html --css docs/ecmarkup.css --js docs/ecmarkup.js",
+    "build": "npm run clean && npm run build-docs",
     "build-travis": "npm run clean && npm run build-master && npm run build-es2017",
     "clean": "rm -rf out",
     "test": "exit 0",