nice readme; fix makefile

makefile

@@ -1,3 +1,5 @@
 main:
 	nasm -g -f elf64 -o main.o main.s
 	ld -o main main.o
+
+.PHONY: main

readme.md

@@ -1,4 +1,14 @@
-# x86_64 assembly
+Very small HTTP server written in x86-64 assembly https://en.wikipedia.org/wiki/X86-64
+
+- one thread
+- event loop with poll(2)
+- targets x86-64 linux
+
+# Why?
+
+Why not?
+
+# x86-64 assembly resources
 
 https://josemariasola.github.io/reference/assembler/Stanford%20CS107%20Guide%20to%20x86-64.pdf
 https://www.bencode.net/blob/nasmcheatsheet.pdf