change npm build task to build umd bundle

Author: Franklin Henderson

package.json

@@ -6,8 +6,9 @@
     "lib",
     "src"
   ],
+  "main": "lib/index.js",
   "scripts": {
-    "build": "gulp build",
+    "build": "gulp build && npm run dist",
     "dist": "npm run dist:umd && npm run dist:min",
     "dist:umd": "NODE_ENV=dev webpack src/index.js dist/visual-stack.js",
     "dist:min": "NODE_ENV=production webpack src/index.js dist/visual-stack.min.js",
@@ -18,7 +19,6 @@
     "watch": "gulp watch"
   },
   "peerDependencies": {
-    "css-loader": ">=0.23.1",
     "react": ">=0.14.7"
   },
   "dependencies": {