added README and COPYING files

COPYING

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+Copyright (C) 2015 Proxmox Server Solutions GmbH
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Affero General Public License for more details.

README

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+Usage example:
+
+1) Create an aab.conf file describing your template.
+
+--- Example aab.conf:
+Name: base
+Version: 2015-08-21-1
+Section: optional
+Maintainer: Your Name
+Headline: ArchLinux base image.
+Architecture: x86_64
+Source: http://archlinux.cu.be/$repo/os/$arch
+--- End of example
+
+2) Run as root:
+
+  # ./aab init
+  # ./aab bootstrap
+
+3) Maybe install additional packages
+
+  # ./aab install base-devel
+
+4) Create the archive and clean up:
+
+  # ./aab finalize
+  # ./aab cleanup