confirm with the user to create a file when it doesn't exist

Previously a file would just be created, but with this patch the user
will be asked for confirmation when trying to open a file that doesn't
exist yet. If they don't answer yes, no file shall be created.

Signed-off-by: Ricky Ayoub <vgmoose@gmail.com>
create README.md
Merge branch 'master' of github.com:vgmoose/chat-edit