Update README.md

Author: mcpiroman

README.md

@@ -1,2 +1,11 @@
-# floppy-bird
-Clone of Flappy Bird that runs in x86 BIOS (without operating system, just bootable image)
+__Floppy Bird__ is a port of Flappy Bird that runs in BIOS, written in x86 assembly (nasm syntax).
+
+To play, just flush the image to your pendriave, CD or ~flappy~ floppy disk and boot your computer from it. Alternatively, you may use virtual machine or emulator, for example Virtual Box (note that VB has probably something messed up with clock, so you may need to adjust timing in code).
+
+![VirtualBox_boot tests_15_02_2020_16_18_39](https://user-images.github.com/38111589/74590722-285bea80-5011-11ea-91ca-2098b6972044.png)
+
+### System Requirements:
+- _Operating System:_ no
+- _Video Card:_ no
+- _Processor:_ 8086 or higher
+- _Storage:_ 756 bytes of free disk space