fix type_map can't convert err
commit at Thu Jun 12 16:49:25 CST 2014
Merge branch 'master' of github.com:roroco/try_ro_rails_commands
find a way to load rails commands by ruby
fix RoCommands::Rails#load_bin_rails cant' invoke rails commands twice bug
commit at Sun Jun 15 17:46:32 CST 2014