Installation with the template: application.js does not appear to exist

Hi,

I'm trying to follow the installation instructions from the website.

This commands:

rails new hyperstacktest -T -m https://rawgit.com/hyperstack-org/hyperstack/edge/install/rails-webpacker.rb

ends with

```
…
yarn add v1.19.0
[1/4] Resolving packages...
[2/4] Fetching packages...
[3/4] Linking dependencies...
[4/4] Building fresh packages...
success Saved lockfile.
success Saved 1 new dependency.
info Direct dependencies
└─ jquery@3.4.1
info All dependencies
└─ jquery@3.4.1
Done in 1.43s.
insert app/assets/javascripts/application.js
The template [https://rawgit.com/hyperstack-org/hyperstack/edge/install/rails-webpacker.rb] could not be loaded. Error: The file /home/vince/bacasable/hyperstacktest/app/assets/javascripts/application.js does not appear to exist
```

I try to carry on:
- I must install `ruby-foreman`
- `foreman start` complains that there is no Procfile
I create one I found on your Slack:
```
web: bundle exec rails s -b 0.0.0.0
hot-loader: bundle exec hyperstack-hotloader -d app/hyperstack
```
but then `localhost:5000` was still unreachable. Same with BASE_URL="http://localhost:5000" foreman start.

Looks like there's a missing bit in the template.

Cheers

Rails 6

ps: could you point to real world examples, preferably open source (apart from the website itself), if there are any?