Add bin and edit workflow

bin/gems/mercenary-0.4.0/lib/mercenary.rb

@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+require File.expand_path("mercenary/version", __dir__)
+require "optparse"
+require "logger"
+
+module Mercenary
+  autoload :Command,   File.expand_path("mercenary/command", __dir__)
+  autoload :Option,    File.expand_path("mercenary/option", __dir__)
+  autoload :Presenter, File.expand_path("mercenary/presenter", __dir__)
+  autoload :Program,   File.expand_path("mercenary/program", __dir__)
+
+  # Public: Instantiate a new program and execute.
+  #
+  # name - the name of your program
+  #
+  # Returns nothing.
+  def self.program(name)
+    program = Program.new(name)
+    yield program
+    program.go(ARGV)
+  end
+end