bin/hvm in haxor-0.1.0 vs bin/hvm in haxor-0.2.0

@@ -1,11 +1,30 @@
 #! /usr/bin/env ruby
 
 require_relative '../lib/haxor'
 
+require 'optparse'
+
+parser = OptionParser.new do |opts|
+  opts.banner = 'Usage: hvm [options] [file.hax.e]'
+
+  opts.on_tail('-h', '--help', 'Show this message') do
+    puts opts
+    exit
+  end
+
+  opts.on_tail('-v', '--version', 'Show version') do
+    puts "Haxor, version #{Haxor::Consts::GEM_VERSION}, version id #{Haxor::Consts::VERSION}."
+    exit
+  end
+end
+
+parser.parse!
+
 if ARGV[0].nil?
-  puts "You must specify .hax.e file to be run."
-  exit 1
+  puts 'You must specify .hax.e file to be run.'
+  puts parser
+  exit
 end
 
 vm = Haxor::Vm::Core.new
 
 filename = ARGV[0]