Update git ignore script

The script was trying to be too smart and now no longer looks for actual
files but instead just adds everything to the gitignore file directly.

Use shell globbing for automatic file listing instead.

bin/git-ignore

@@ -4,5 +4,7 @@ if [ -z "$@" ]
 then
 	$(git config --get core.editor) $(git rev-parse --show-toplevel)/.git/info/exclude
 else
-	ls -d "$@" >> "$(git rev-parse --show-toplevel)/.git/info/exclude"
+	for file in "$@"
+	do echo "$file" >> "$(git rev-parse --show-toplevel)/.git/info/exclude"
+	done
 fi