contrib/README

Apparently we forgot to update the README file in contrib/.  I wonder if
it's necessary to explain that within each directory you find one or
more ".control" file that determines what can be run ... or maybe just
mention the pg_extensions views?

What about this?

diff --git a/contrib/README b/contrib/README
index a1d42a1..8900693 100644
--- a/contrib/README
+++ b/contrib/README
@@ -11,11 +11,11 @@ User documentation for each module appears in the main SGML documentation.Most items can be built
with`gmake all' and installed with`gmake install' in the usual fashion, after you have run the `configure'script in the
top-leveldirectory.  Some directories supply new 
-user-defined functions, operators, or types.  In these cases, after you have
+user-defined Postgres extensions.  In these cases, after you haveinstalled the files you need to register the new
entitiesin the database 
-system by running the commands in the supplied .sql file.  For example,
+system by running an appropriate CREATE EXTENSION command.  For example,
-   $ psql -d dbname -f module.sql
+   $ psql -d dbname -c "CREATE EXTENSION pg_trgm"See the PostgreSQL documentation for more information about
thisprocedure.


--
Álvaro Herrera <alvherre@alvh.no-ip.org>