Archivation task in Gruntfile now checks for packages first.

Gruntfile.js

@@ -66,7 +66,7 @@ module.exports = function(grunt) {
             },
             // Archive debian packages
             archive_deb: {
-                command: 'mv -f <%= project_paths.deploy_dir %>*.deb <%= project_paths.archive_dir %>'
+                command: 'if [[ -n $(find <%= project_paths.deploy_dir %> -maxdepth 1 -name *.deb) ]]; then mv -f <%= project_paths.deploy_dir %>*.deb <%= project_paths.archive_dir %>; fi;'
             },
             // Build debian package
             build_deb: {