Add bin and edit workflow

bin/gems/mercenary-0.4.0/examples/trace.rb

@@ -0,0 +1,20 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+$LOAD_PATH.unshift File.join(__dir__, "..", "lib")
+
+require "mercenary"
+
+# This example sets the logging mode of mercenary to
+# debug. Logging messages from "p.logger.debug" will
+# be output to STDOUT.
+
+Mercenary.program(:trace) do |p|
+  p.version "2.0.1"
+  p.description "An example of traces in Mercenary"
+  p.syntax "trace <subcommand>"
+
+  p.action do |_, _|
+    raise ArgumentError, "YOU DID SOMETHING TERRIBLE YOU BUFFOON"
+  end
+end