Create skeleton application runner

bin/usaidwat

@@ -0,0 +1,5 @@
+#!/usr/bin/env ruby
+
+require 'usaidwat'
+
+USaidWat.application.run(ARGV)

features/help.feature

@@ -10,3 +10,11 @@ Feature: Get help
       """
       Usage: usaidwat [--tally] <user> [<subreddit>]
       """
+
+  Scenario: Get version
+    When I run `usaidwat --version`
+    Then the exit status should be 0
+    And the stdout should contain:
+      """
+      usaidwat v
+      """

lib/usaidwat.rb

@@ -1 +1,2 @@
+require "usaidwat/application"
 require "usaidwat/version"

lib/usaidwat/application.rb

@@ -0,0 +1,35 @@
+module USaidWat
+  class << self
+    def application
+      @application ||= USaidWat::Application.new
+    end
+  end
+
+  class Application
+    def run(argv)
+      @opts, args = handle_arguments(argv)
+    end
+
+    def usage(code=0)
+      puts "Usage: usaidwat [--tally] <user> [<subreddit>]"
+      exit code
+    end
+
+    def version(code=0)
+      puts "usaidwat v#{USaidWat::VERSION}"
+    end
+
+    private
+      def handle_arguments(argv)
+        usage if argv.first == "--help"
+        version if argv.first == "--version"
+        opts = {:tally => false}
+        if argv.first == "--tally"
+          opts[:tally] = true
+          argv.shift
+          usage(1) if argv.length > 1
+        end
+        [opts, argv]
+      end
+  end
+end