If you want to open VimR from the command line here is what you need to do;
Create a bash script in
In that file write the following;
#!/bin/bash open -a VimR.app "$@"
Make the script writeable by calling
chmod u+x vimr.
Now you can call vimr filename to open a specific file or folder, or if you call
vimr . it will open the current working directory in VimR.