initial README

README.md

@@ -1,4 +1,23 @@
 RefreshAllMaterializedViews
 ===========================
 
-Function to refresh all materialized views in a PostgreSQL 9.3 database
+Function to refresh all materialized views in a PostgreSQL 9.3 database.
+
+PostgreSQL 9.3 supports materialized views but does not have a functionality 
+to refresh the views except for issuing refresh command for each view 
+individually. After asking on stackoverflow and not finding solution 
+(http://stackoverflow.com/questions/19981600/how-to-refresh-all-materialized-views-in-postgresql-9-3-at-once) 
+I decided to write my own function.
+
+Usage
+-----
+
+To refresh views in `public` schema:
+```
+select RefreshAllMaterizlizedViews()
+```
+
+To refresh views in other schema:
+```
+select RefreshAllMaterizlizedViews('my_schema');
+```