Add tutorial codecrafters-io#91

Author: danistefanovic

README.md

@@ -179,7 +179,8 @@
 * [**Assembly**: _Writing a Tiny x86 Bootloader_](http://joebergeron.io/posts/post_two.html)
 * [**C**: _Operating Systems: From 0 to 1_](https://tuhdo.github.io/os01/)
 * [**C**: _The little book about OS development_](https://littleosbook.github.io/)
-* [**C**: _Kernel 101 –Let’s write a Kernel_](https://arjunsreedharan.org/post/82710718100/kernel-101-lets-write-a-kernel)
+* [**C**: _Kernel 101 – Let’s write a Kernel_](https://arjunsreedharan.org/post/82710718100/kernel-101-lets-write-a-kernel)
+* [**C**: _Kernel 201 – Let’s write a Kernel with keyboard and screen support_](https://arjunsreedharan.org/post/99370248137/kernel-201-lets-write-a-kernel-with-keyboard)
 * [**C**: _Build a minimal multi-tasking kernel for ARM from scratch_](https://github.com/jserv/mini-arm-os)
 * [**C**: _How to create an OS from scratch_](https://github.com/cfenollosa/os-tutorial)
 * [**C**: _Malloc tutorial_](https://danluu.com/malloc-tutorial/)