README - 轉換至 Markdown 格式

Signed-off-by: Ｖ字龍(Vdragon) <pika1021@gmail.com>
README - fix typos

Signed-off-by: Ｖ字龍(Vdragon) <pika1021@gmail.com>
Buildsystem CMake - 補上缺少的 target_link_libraries 命令

需要 target_link_libraries 命令來指定連結器要連結的函式庫

Signed-off-by: Ｖ字龍(Vdragon) <pika1021@gmail.com>