Original tool by xem: https://github.com/xem/3DShomebrew/blob/gh-pages/tools.md
Modified to create BGRA bin files.
This tool generates a .bin file from any image.
Output bin contains raw image data as BGR (blue, green, red) or ABGR (alpha + BGR).
Read the 3DS homebrew tutorial to learn how to use these BIN files in your homebrews.
The 3DS screens are rotated -90 degrees. To fix that, the tool rotates your image +90 degrees.