Add forgot upgrade sql file

Add upgrade SQL script forgot to be included in the last commits.

diff --git a/pg_store_plans--1.6--1.6.1.sql b/pg_store_plans--1.6--1.6.1.sql
new file mode 100644 (file)
index 0000000..e7ad3c3
--- /dev/null
+++ b/pg_store_plans--1.6--1.6.1.sql
@@ -0,0 +1,4 @@
+/* pg_store_plans/pg_store_plans--1.6--1.6.1.sql */
+
+-- complain if script is sourced in psql, rather than via CREATE EXTENSION
+\echo Use "CREATE EXTENSION pg_store_plans" to load this file. \quit