Adding initial run with mimetypes and index page

[saidbakr]

Initial run options after compile to get quick ride with the server. It includes index.html, mimetypes to be able to access a linked README.md and run.sh shell script to apply those initial run options.

[solt87]

I wonder if hard-coding the custom 404 page's path without
optionally giving a custom file path might cause some headaches.
What if someone installs darkhttpd in ~/bin (or even in
/usr/local/bin/)? Not being able to give a custom path for
the custom error page means the custom error file must also
go in ~/bin (or wherever darkhttpd is installed), which
results in "littering" a bin directory with non-executable
data.

Would it be reasonable to have an optional file path follow the
--e404 option, in which case the given file would be used?
If one uses darkhttpd for more than one projects, a hard-coded
error page might not suffice in all cases.

Or, simpler yet, the custom 404 page file should be looked for
in the "web root" directory that darkhttpd serves.