Bump version to 0.2.2 and add project URL.

configure.ac

@@ -3,7 +3,8 @@ dnl Basic autotools settings.
 dnl ######################################################################
 AC_PREREQ([2.64])
 dnl Update the corresponding entry in doc/Doxyfile when changing this
-AC_INIT([yaxt],[0.2.1],[hanke@dkrz.de])
+AC_INIT([yaxt],[0.2.2],[hanke@dkrz.de],,
+  [http://www.dkrz.de/redmine/projects/yaxt])
 AC_CONFIG_SRCDIR([src/xt_idxlist.c])
 AC_CONFIG_AUX_DIR([config])
 AC_CONFIG_MACRO_DIR([m4])