format headers

We move `tmp/format-headers.sh` into `bin/format-headers.sh`.

We also add a few missing empty lines to `README.md`.

We add `bin/format-headers.sh` to the `bin/README.md`.

We run `bin/format-headers.sh` to perform the above.

Performed `make www` to accomplish the above and to test under macOS.

2004/hibachi/README.md

@@ -46,7 +46,6 @@ This will run the `configure` script and then compile and link in (in
 Then with your browser do the same as for the original source.
 
 
-
 ## Judges' remarks:
 
 This entry violates the [guidelines](../../2004/guidelines.txt) in so many ways!  We