Fscap should check if Env exists and provide setup instructions

[s3bw]

Currently fscap list checks the directory but not new such that after creating a note it is lost as the note directory hasn't been set. One should check the path before entering vim.

If path does not exit ask to continue to setup fscap
enter path name: .fscap_notes
create: notes, data, deleted

This Issue follows from #72