Update readme.md

added more descriptions for databases

Author: morenoh149

readme.md

@@ -3,3 +3,10 @@
 copy of http://pgfoundry.org/projects/dbsamples/
 
 A collection of sample databases for PostgreSQL.
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+* DELL Store - e-commerce dvd store example
+* French Towns - all French towns and regions
+* ISO-3166 - All countries and subcountries in the world
+* Pagila - Movie rental database with actors, ratings, payments, etc.
+* USDA - food database
+* World - city, country, language for the world