Added META-INF/DO-NOT-EDIT.txt to prevent confusion (some may tries to edit METAINF.MF here). Also, excluded the legal files.
Added META-INF/DO-NOT-EDIT.txt to prevent confusion (some may tries to edit METAINF.MF here). Also, excluded the legal files.

apache/incubator-freemarker,apache/incubator-freemarker