Remove stylus from build scripts

Author: cheton

examples/app.styl

@@ -4,17 +4,15 @@
   "description": "The infinite-tree library for React.",
   "main": "lib/index.js",
   "scripts": {
-    "prepublish": "npm run lint && npm test && npm run build && npm run dist && npm run stylus && npm run build-examples && npm run release",
+    "prepublish": "npm run lint && npm test && npm run build && npm run dist && npm run build-examples && npm run release",
     "build": "babel --out-dir ./lib ./src",
     "build-examples": "cd examples; webpack",
     "test": "tap test/*.js --node-arg=--require --node-arg=babel-register --node-arg=--require --node-arg=babel-polyfill",
     "dist": "webpack; BUILD_ENV=dist webpack",
     "release": "mkdir -p releases; cp -f dist/react-infinite-tree.css releases/react-infinite-tree-${npm_package_version}.css; cp -f dist/react-infinite-tree.js releases/react-infinite-tree-${npm_package_version}.js; cp -f dist/react-infinite-tree.min.js releases/react-infinite-tree-${npm_package_version}.min.js",
-    "lint": "npm run eslint && npm run stylint",
+    "lint": "npm run eslint",
     "eslint": "eslint ./src",
     "eslint:fix": "eslint --fix ./src",
-    "stylint": "stylint src/*.styl",
-    "stylus": "stylus -u nib < src/index.styl > dist/react-infinite-tree.css",
     "coveralls": "tap test/*.js --coverage --coverage-report=text-lcov --nyc-arg=--require --nyc-arg=babel-register --nyc-arg=--require --nyc-arg=babel-polyfill | coveralls",
     "dev": "cd examples; webpack-dev-server --hot --inline --host 0.0.0.0 --port 8000 --content-base ../docs"
   },