1. Install fossilize plugin

$ ./script/plugin source http://opensvn.csie.org/mmediasys/trunk/rails/plugins/
$ ./script/plugin install fossilize

2. Create the default script and configuration for your application

# will create config/application.yml and bin/my_rails_app
$ ./script/generate fossilize MyRailsApp

3. Edit config/application.yml if needed (author name, email, gem version etc.)

4. Generate the gem (in pkg/ directory)

# will produce pkg/my_rails_app-x.y.z.gem
$ rake package

5. Usage

$ gem install my_rails_app
$ my_rails_app /path/to/install