implemented so many things...

README.md

@@ -31,12 +31,13 @@ file should be self documented.
 #### Server
 * [clojure](https://clojure.org/) for programming language
 * [kafka](http://kafka.apache.org/) for message broker/database
+* [datomic-free](https://www.datomic.com/) for transaction needs
 
 #### In the browser
 * [clojure script](https://clojurescript.org/) for programming language
 * [sparks](https://aftertheflood.com/projects/sparks/) for trivial charts
 * [metricsgraphicsjs](http://metricsgraphicsjs.org/) for complex charts
-
+* [dc-js](http://dc-js.github.io/dc.js/) for some charting.
 
 
 ## License