cleanup after successfully creating an easy channel URL

pkgs/generate channel file.txt

@@ -0,0 +1,5 @@
+# run this after any update of sandd.nix
+
+tar -cJf nixexprs.tar.xz ./pkgs/sandd.nix \
+      --transform "s,^,${PWD##*/}/," \
+      --owner=0 --group=0 --mtime="1970-01-01 00:00:00 UTC"

readme.md

@@ -12,9 +12,9 @@ where the only surviving form is printed or even handwritten.
 
 First install nix following the instructions on their website at https://nixos.org/nix/manual/#chap-installation
 
-The add searchanddiplace channel to your nix environment and update it:
+The add search-and-displace channel to your nix environment and update it:
 ```bash
-nix-channel --add https://github.com/searchanddisplace/searchanddisplace/pkgs
+nix-channel --add https://github.com/searchanddisplace/searchanddisplace/raw/master/pkgs/nixexprs.tar.xz
 nix-channel --update
 ```