Documentation (INSTALL.MD) still contains nocsd installation instructions, despite no longer beeing needed

[Lalarian]

Since XFCE (luckily!) has been patched to make Client Side Decorations optional.
(I just saw: Instructions for disabling csd through XFCE's options are already in there)

Thank for your the wonderful desktop experience! :)

[na0miluv]

While it is true that XFCE itself no longer needs this, it could still be used if you use GTK3-Classic instead of the regular GTK3.