Restore Procfile.dev-prod-assets - file exists on master

Author: justin808

Procfile.dev-prod-assets

@@ -0,0 +1,10 @@
+# You can run these commands in separate shells
+web: bin/rails s -p 3001
+redis: redis-server
+
+# Next line runs a watch process with webpack to compile the changed files.
+# When making frequent changes to client side assets, you will prefer building webpack assets
+# upon saving rather than when you refresh your browser page.
+# Note, if using React on Rails localization you will need to run
+# `bundle exec rake react_on_rails:locale` before you run bin/shakapacker
+webpack: sh -c 'bundle exec rake react_on_rails:locale && rm -rf public/packs/* || true && bin/shakapacker -w'