updated new rational, features

README.md

@@ -1,22 +1,47 @@
 # Pregres
 
-An immutable interface to [Postgres]
-(https://github.com/pgjdbc/pgjdbc), built on
-[Component](https://github.com/stuartsierra/component),
-[Schema](https://github.com/Prismatic/schema) and
-[YeSQL](https://github.com/krisajenkins/yesql).
-
-## Contributing
-
-Pregres is currently in the design phase. 
+An Clojure interface to Postgres database development.
+
+## Rationale 
+
+Customers and developers have substantial investments in, and are comfortable
+with the performance, security and stability of, widely used opensource
+relational databases like Postgres. While Clojure developers may envy the
+relative ease, flexibility and productivity of immutable databases like Datomic,
+they have concerns about running them on customer-approved rdbms, accessing
+existing data (including bigdata), and decades of research on fine-tuning
+SQL. In addition, they face ongoing problems integrating with analytics and data
+science teams.
+
+Pregres is an effort to build a pragmatic library suitable in those areas where
+a comprehensive Clojure api is suitable. It reflects the reality that, for
+security, ACID compliance, and sharding scalability, sql workflows must
+simply shine with idiomatic Clojure.
+
+## Features
+
+- Built on Clojure [JDBC](https://github.com/clojure/java.jdbc)
+- Built-in data type conversions, including json
+- Industry's best [Connection Pool](https://github.com/brettwooldridge/HikariCP)
+- First-class [Migrations](https://github.com/weavejester/ragtime)
+- Plain old SQL using [HugSQL](https://www.hugsql.org/) 
+- Integration with popular Postgres extensions (postgis)
+
+## Credits
+
+Some functions are copied from the following libraries. I remain thankful to them.
+
+- [audit triggers](https://github.com/2ndQuadrant/audit-trigger)
+- [clojure.jdbc](https://github.com/funcool/clojure.jdbc)
+- [clj-postgresql](https://github.com/remodoy/clj-postgresql)
+- [pg-migrator](https://github.com/aphel-bilisim-hizmetleri/pg-migrator)
+- [sparkx-kits](https://github.com/staples-sparx/kits)
 
 ## Status
 
-Unstable.
-
-I'm currently reading Postgres and H2 java drivers to build EAVT [indexes](http://docs.datomic.com/indexes.html), influenced by Datomic.
+Beta, unstable
 
 ## License
 
-Copyright © 2015-2016, Facjure, LLC. Distributed under the Eclipse Public
+Copyright © 2015-2020, Facjure, LLC. Distributed under the Eclipse Public
 License either version 1.0 or (at your option) any later version.