[BusyBox] more docs fixups

[Robert P. J. Day]

(debianutils directory)

mktemp:

	docs don't mention "-d" option, ostensibly for creating a
	directory

(editors directory)

sed:

	sed [-nef] pattern [files...] 

	Options:


        -n              suppress automatic printing of pattern space
        -e script       add the script to the commands to be executed
        -f scriptfile   add script-file contents to the
                        commands to be executed
        -i              Edit files in-place

	1) synopsis does not mention "-i" option, but list does

vi:

	vi [OPTION] [FILE]... 

	Options:

        -R      Read-only- do not write to the file.

  actually, vi.c contains the following:

	while ((c = getopt(argc, argv, "hCR")) != -1) {

  where -h means "show help".  (in a general sense, should all BB comamnds
  support a "-h" option?  the way standard GNU commands seem to support
  "--help?

  BTW, the "-C" option seems to mean set the "crashme" variable.  
  whatever



rday