add script to save models as tar archives

bin/save_model

@@ -0,0 +1,16 @@
+#!/usr/bin/env ruby
+require 'date'
+
+models_dir = 'models'
+model_name = ARGV[0]
+model_path = File.join(models_dir, model_name)
+
+episode_count = (File.read File.join(model_path, 'model.episodes')).to_i
+
+puts "Found model #{model_name} with episodes #{episode_count} trained!"
+
+file_name = "model-#{model_name}-#{episode_count}-#{Time.now.strftime('%Y%m%d-%H%M%S')}.tar.gz"
+save_path = File.join(models_dir, 'saves', file_name)
+puts "Saving to #{save_path}"
+
+`tar -cvzf #{save_path} -C #{models_dir} #{model_name}`