update readme with credits to tleydxdy

Author: Francesco149

README.md

@@ -1,10 +1,22 @@
-single-page http server for x86\_64 linux in a 5kb static binary,
+single-page http server for x86\_64 linux in a 1kb static binary,
 doesn't depend on libc
 
+huge credits to @tleydxdy for bringing this down from 5kb to 1kb and
+<1kb with the asm version
+
 # build and run
 ```
 ./build.sh
 ./httpd 8080 test.html
 ```
 
 if you don't have gcc, change build.sh to match your compiler
+
+build even smaller asm version with a custom elf header, < 1kb
+
+requires nasm
+
+```
+./asm.sh
+./httpd 8080 test.html
+```