bin/peto in peto-0.1.3 vs bin/peto in peto-0.2.0

@@ -2,9 +2,24 @@
 
 $LOAD_PATH.unshift(File.join(File.dirname(__FILE__), '..', 'lib'))
 $LOAD_PATH.unshift(File.dirname(__FILE__))
 require "peto"
 
+require "optparse"
+options = {}
+OptionParser.new do |opt|
+  opt.on("-o output directory") {|value| options[:output] = value }
+  opt.parse!(ARGV)
+end
+input = ARGV.pop
+
+if input.nil?
+  puts "usage:\n  % peto contract.yml"
+  exit
+end
+
+options[:output] = File.dirname(input) if options[:output].nil?
+
 peto = Peto::Master.new
-peto.load(ARGV.first)
-puts peto.generate
+peto.load(input)
+peto.generate