README: Turns out that tar is a hard requirement

... for boulder.

We need to fix this in the boulder serpent recipe as well.

Signed-off-by: Rune Morling <ermo@serpentos.com>

README.md

@@ -35,7 +35,7 @@ git clone https://github.com/serpent-os/tools.git
 cd tools/
 
 # Install a few prerequisites (this how you'd do it on Serpent OS)
-sudo moss it binutils glibc-devel linux-headers clang
+sudo moss it binutils glibc-devel linux-headers clang tar
 
 # remember to add ~/.cargo/bin to your $PATH if this is how you installed rustfmt
 cargo install rustfmt