improve README.md

-# GetCD
-
-## abstract
+# getcd
 
 A small script to rip and encode audio from a CD.
 
-## requires
-
- - bash
- - flac
- - cdrtools
- - cdrdao
- - lame
- 
-## status
- 
- unknown
\ No newline at end of file
+## Synopsis
+
+    ./getcd.sh [-t(m|f|o|w)] [-p path] [-e encoder] [-c cddbitem] [-h]
+       [-I interface] [-D device] [-v[v|0]] [-q] [-s]
+       [--help] [--encoding=(m|f|o|w)] [--encoder=(lame|bladeenc)]
+       [--path=<string>] [--interface=(cooked_ioctl|generic_scsi)]
+       [--device=<string>]
+
+
+## Description
+
+To be written....
+
+## Requirements
+
+ * bash
+
+## Dependencies
+
+ * flac
+ * cdrtools
+ * cdrdao
+ * lame
+
+## Contributing
+
+No contribution now, sorry.
+
+## License
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+## Author
+
+Georg Hopp <georg@steffers.org>
+