```ruby
require 'simple-git-pair/version'

module SimpleGitPair
  module Helper
    class << self
      PAIRS_FILE = File.expand_path('~/.git_pairs')

      def show_help
        puts <<-EOS

          #{SUMMARY}
          Usage: git-pair <initial1> <initial2>
        EOS
      end

      def complain_about_pairs_file
        puts <<-EOS

          Please create #{PAIRS_FILE.split("/").last} file in your home directory in yaml format:
            ae: Alfred Einstein
            nt: Nikola Tesla
        EOS
      end

      def names_for args
        pairs = YAML.load_file PAIRS_FILE

        names = []
        args.each do |opt|
          raise "There is no entry for #{opt} in #{PAIRS_FILE}" unless pairs[opt]
          names << pairs[opt]
        end

        names
      end

      def pairs_file_exists?
        File.exist? PAIRS_FILE
      end
    end
  end
end
```

Split PAIRS_FILE into PAIRS_FILE_NAME and PAIRS_FILE_PATH
user
```ruby
require 'simple-git-pair/version'

module SimpleGitPair
  module Helper
    class << self
      PAIRS_FILE_NAME = '.git_pairs'
      PAIRS_FILE_PATH = File.expand_path("~/#{PAIRS_FILE_NAME}")

      def show_help
        puts <<-EOS

          #{SUMMARY}
          Usage: git-pair <initial1> <initial2>

          Commands:
            init - creates sample #{PAIRS_FILE_NAME} config
        EOS
      end

      def complain_about_pairs_file
        puts <<-EOS

          Please create #{PAIRS_FILE_NAME} file in your home directory in yaml format:
            ae: Alfred Einstein
            nt: Nikola Tesla
        EOS
      end

      def names_for args
        pairs = YAML.load_file PAIRS_FILE_PATH

        names = []
        args.each do |opt|
          raise "There is no entry for #{opt} in #{PAIRS_FILE_PATH}" unless pairs[opt]
          names << pairs[opt]
        end

        names
      end

      def pairs_file_exists?
        File.exist? PAIRS_FILE_PATH
      end

      def create_pairs_file
        File.open(PAIRS_FILE_PATH, "w") { |f| f.write "nl: Nikola Tesla\nae: Alfred Einstein" }
      end
    end
  end
end
```
assistant