Update README.md

Theory/README.md

@@ -4,3 +4,4 @@ This chapter describes various theoretical concepts and concepts which are not d
 
 * [Paging](http://0xax.gitbooks.io/linux-insides/content/Theory/Paging.html)
 * [Elf64 format](http://0xax.gitbooks.io/linux-insides/content/Theory/ELF.html)
+* [Inline assembly](http://0xax.gitbooks.io/linux-insides/content/Theory/asm.html)