readme update

pkgs/README.md

@@ -12,8 +12,8 @@ nix-env -qaP -f .
 #### Development
 
 Add your package in a folder at the root and create a nix expression in it,
-preferably `default.nix`. Add your package to the root datamove-nix/default.nix.
+preferably `default.nix`. Add your package to the root default.nix.
 
-The global pinned nixpkgs version can be updated with ./pin.sh, which updates the json
+The global pinned nixpkgs version can be updated with ../pin.sh, which updates the json
 file at the root of the package set. This should be done carefully, as it might break
 some user packages.