Update screenshot and readme

README.md

@@ -2,4 +2,52 @@
 
 This is an attempt to create a basic notepad app using ChatGPT and C.
 
+> [!NOTE]
+> This code was generated using AI. Use at your own risk.
+
 ![Initial screenshot](SuperNotepad-screenshot.png)
+
+## Build Dependencies
+
+### Debian/Ubuntu:
+
+```
+sudo apt install build-essential meson ninja-build pkg-config \
+  libgtk-3-dev libgtksourceview-4-dev
+```
+
+### Fedora:
+
+```
+sudo dnf install @development-tools meson ninja-build pkgconf-pkg-config \
+  gtk3-devel gtksourceview4-devel
+```
+
+### Arch/Manjaro:
+
+```
+sudo pacman -S --needed base-devel meson ninja pkgconf gtk3 gtksourceview4
+```
+
+### Windows:
+
+Install MSYS2, then in MSYS2 MinGW 64-bit shell:
+
+```
+pacman -S --needed mingw-w64-x86_64-toolchain mingw-w64-x86_64-meson \
+  mingw-w64-x86_64-gtk3 mingw-w64-x86_64-gtksourceview4 pkgconf ninja
+```
+
+### macOS (Homebrew):
+
+```
+brew install meson ninja pkg-config gtk+3 gtksourceview4
+```
+
+## Build Instructions
+
+```
+meson setup build
+meson compile -C build
+./build/SuperNotepad
+```