run! (Capistrano::Shell)

    # File lib/capistrano/shell.rb, line 39
        def run!
          setup

          puts "====================================================================\nWelcome to the interactive Capistrano shell! This is an experimental\nfeature, and is liable to change in future releases. Type 'help' for\na summary of how to use the shell.\n--------------------------------------------------------------------\n"

          loop do
            break if !read_and_execute
          end

          @bgthread.kill
        end