Fix for the reciepts zip Makfile.

Because some of the files have characters that the shell interpets. The
downside is that now the Makefile is not portable but it's GNU specific.

Documents/Shore/taxes/Makefile

@@ -3,7 +3,7 @@ last_zip != find -maxdepth 1 -name '*.zip' \! -name '${last_month}.zip' -printf
 new_files != find reciepts/ -type f -newer ${last_zip}
 
 ${last_month}.zip: ${new_files}
-	zip $@ $^
+	zip $@ $(patsubst %,'%',$^)
 
 .PHONY: clean
 clean: