Doh. As I went off to make this change, I realized another reason I chose `g:rspec_terminal`: in the code, I am using this variable to complete the string "/bin/run_in_os_x_<terminal>". Using `g:rspec_runner` here looks weird, so that would mean an even bigger change whereby `g:rspec_runner` should really be an arbitrary string that refers to a command, in the default case encapsulating all of `g:plugin_path . g:rspec_runner`.

Ok so suppose I did that. Then I'd *still* have to find a variable to store the string "iterm" given from a user's vimrc; otherwise, the interface to setting this option wouldn't look so good.

Thoughts?