app_create.thor

#!/usr/bin/env ruby
class App < Thor
  include Thor::Actions

  desc "create", "creates folder with project name include the gemfile and rvm gemset"
  def create(name)
    Dir.mkdir name
    template "templates/generic_gemfile.erb", "#{name}/Gemfile"
    `echo 'rvm use 1.9.3-p125@#{name} --create' > #{name}/.rvmrc`
  end

  # Used internally by thor. I have no idea why it doesn't have this by default.
  def self.source_root
    File.dirname(__FILE__)
  end
end

INSTALL.md

thor install app_create.thor Make sure that the templates__generic_gemfile.erb is renamed and moved to ~/.thor/templates/generic_gemfile.erb

Then you can run thor list to verify that the script was installed successfully. If the command appears in the output, you should be good to run thor app:create APP_NAME.

templates__generic_gemfile.erb

source 'https://rubygems.org'

group :development do
  gem 'pry'
end