gitignore .idea directory, make executable a bit more flexible

.gitignore

@@ -15,3 +15,4 @@ spec/reports
 test/tmp
 test/tmp
 test/version_tmp
 test/version_tmp
 tmp
 tmp
+.idea

bin/rumoji

 #!/usr/bin/env ruby
 #!/usr/bin/env ruby
 # -*- encoding: utf-8 -*-
 # -*- encoding: utf-8 -*-
 
 
+$: << File.expand_path(File.join(File.dirname(__FILE__), '..', 'lib'))
+
+require 'rubygems'
 require 'rumoji'
 require 'rumoji'
 
 
-Rumoji.decode_io(STDIN, STDOUT)
+if ARGV.first == 'encode'
+  Rumoji.encode_io(STDIN, STDOUT)
+else
+  Rumoji.decode_io(STDIN, STDOUT)
+end