use create react app to simplify the application

.gitignore

@@ -1,9 +1,24 @@
+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+
+# testing
+/coverage
+
+# production
+/build
+
+# misc
 .idea
 .DS_Store
-dist
-node_modules
-npm-debug.log
-yarn-error.log
-aoe_technology_radar.iml
-build
-# bin
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*