Fix build directory name

package.json

@@ -5,7 +5,7 @@
   "scripts": {
     "build": "webpack",
     "start": "webpack-dev-server --inline --watch --hot",
-    "deploy": "gh-pages -d build -e kalkulator"
+    "deploy": "gh-pages -d dist"
   },
   "keywords": [],
   "author": "Michał Górny",