chore: include .circleci in gh-pages deploy

Author: jedwards1211

package.json

@@ -23,7 +23,7 @@
     "start": "webpack-dev-server",
     "build:demo": "rimraf demo-dist && cross-env NODE_ENV=production BABEL_ENV=es5 webpack && (cd demo; copy index.html ../demo-dist/) && copy .circleci/config.yml demo-dist/",
     "predeploy": "yarn build:demo",
-    "deploy": "gh-pages -d demo-dist"
+    "deploy": "gh-pages -d demo-dist --dotfiles"
   },
   "husky": {
     "hooks": {