Just man tree if it's on your system. I used it for temporary jobs, like where I needed to give some students a quick website of a folder of source files. Not much to it.

     -H baseHREF

     Turn on HTML output, including HTTP references. Useful for ftp sites.
     baseHREF gives the base ftp location when using HTML
     output. That is, the local directory may be `/local/ftp/pub', but
     it must be referenced as `ftp://hostname.organization.domain/pub'
     (baseHREF should be `ftp://hostname.organization.domain').
     Hint: don't use ANSI lines with this option, and don't give more
     than one directory in the directory list. If you wish to use
     colors via CSS style-sheet, use the -C option in addition to this
     option to force color output.

     -T title
     Sets the title and H1 header string in HTML output mode.

and that's about it!