Revise README for better organization and clarity

Updated README.md to improve clarity and structure.

Author: IanSeyler

README.md

@@ -1,8 +1,14 @@
-[![CI](https://github.com/ReturnInfinity/BareMetal/actions/workflows/main.yml/badge.svg)](https://github.com/ReturnInfinity/BareMetal/actions/workflows/main.yml)
+<div align="center">
 
 # BareMetal
+**Just enough kernel**
+
+[![Assembly](https://img.shields.io/badge/x86--64-Assembly-blue)]()
+[![License](https://img.shields.io/badge/license-MIT-blue.svg)](LICENSE)
+[![CI](https://github.com/ReturnInfinity/BareMetal/actions/workflows/main.yml/badge.svg)](https://github.com/ReturnInfinity/BareMetal/actions/workflows/main.yml)
 
-_Just enough kernel_
+<sub>Exokernel • Pure Assembly • Virtual/Physical</sub>
+</div>
 
 Official repo of the BareMetal [exokernel](http://en.wikipedia.org/wiki/Exokernel). It's written from scratch in Assembly, designed for x86-64 hardware, with no dependencies except for the virtual/physical hardware. An ARM and/or RISC-V rewrite would be considered once hardware is standardized.
 
@@ -25,7 +31,7 @@ BareMetal provides basic support for symmetric multiprocessing, network, and sto
 ## Key features
 * **64-bit**: Make use of the extra-wide and additional registers available in 64-bit mode.
 * **Mono-processing, multi-core**: The system is able to execute a single program but can spread the work load amongst available CPU cores.
-* **Extremely tiny memory footprint**: The kernel binary is less than 32KiB. BareMetal uses 4 MiB of RAM while running. The majority of RAM usage is for required memory structures for operating in 64-bit mode, drivers, CPU stacks, and system buffers.
+* **Extremely tiny memory footprint**: The kernel binary is less than 32KiB. BareMetal uses 4 MiB of RAM while running. The majority of RAM usage is for required memory structures for operating in 64-bit mode, drivers/system buffers, and CPU stacks.
 * **Physical and virtual hardware support** with full virtualization, using [x86 hardware virtualization](https://en.wikipedia.org/wiki/X86_virtualization) whenever available (it is on most modern x86-64 CPU's). In principle BareMetal should run on any x86-64 hardware platform, even on a physical x86-64 computer, given appropriate drivers. Officially, we develop on [QEMU](http://www.qemu.org) and [VirtualBox](https://www.virtualbox.org), which means that you can run BareMetal on both Linux, Microsoft Windows, and Apple macOS.
 
 ## Supported Hardware
@@ -51,9 +57,15 @@ BareMetal provides basic support for symmetric multiprocessing, network, and sto
   * IDE
   * Virtio-Blk
 * HID (Human Interface Devices)
-  * PS/2 Keyboard
-  * PS/2 Mouse
-  * USB Keyboard
+  * Input
+    * PS/2 Keyboard
+    * PS/2 Mouse
+    * USB Keyboard
+    * Serial
+  * Output
+    * LFB (linear frame buffer at native screen resolution with 1024x768x32bpp as fallback)
+    * VGA text mode (80x25 characters with 16 colors)
+    * Serial
 
 ## Try it out