Merge pull request #1654 from rouault/unmaintained

README.md: unmaintained repository

Author: rouault

README.md

@@ -1,6 +1,11 @@
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 # OPENJPEG Library and Applications
 
+## Unmaintained repository
+
+This repository should be considered unmaintained. Commits may appear from time
+to time depending on committer interest and mood, but no committer currently feel
+responsible to regularly review tickets or pull requests.
+
 ## What is OpenJPEG ? 
 
 OpenJPEG is an open-source JPEG 2000 codec written in C language. It has been developed in order to promote the use of [JPEG 2000](http://www.jpeg.org/jpeg2000), a still-image compression standard from the Joint Photographic Experts Group ([JPEG](http://www.jpeg.org)).  Since April 2015, it is officially recognized by ISO/IEC and ITU-T as a [JPEG 2000 Reference Software](http://www.itu.int/rec/T-REC-T.804-201504-I!Amd2).