Migrate from Vue to React framework.

client/.gitignore

@@ -1,16 +1,23 @@
+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+
+# testing
+/coverage
+
+# production
+/build
+
+# misc
 .DS_Store
-node_modules/
-/dist/
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
-/test/unit/coverage/
-/test/e2e/reports/
-selenium-debug.log
-# Editor directories and files
-.idea
-.vscode
-*.suo
-*.ntvs*
-*.njsproj
-*.sln