...Some operating systems may provide an unsupported version of Ruby as their "system ruby". In these cases, users should use RVM or rbenv to install a supported Ruby version and use that version's gem binary to install tmuxinator. tmuxinator uses your shell's default editor for opening files. If you want to change your default editor simply put a line in ~/.bashrc that changes it. The recommended version of tmux to use is 1.8 or later, with the exception of 2.5, which is not supported (see issue 536 for details). Your mileage may vary for earlier versions. ...