Added badges to readme

Author: MateuszKubuszok

README.md

@@ -1,5 +1,9 @@
 # Over-Complicated Database Query (OCD Query)
 
+[![Build Status](https://travis-ci.org/scalalandio/ocdquery.svg?branch=master)](https://travis-ci.org/scalalandio/ocdquery)
+[![Maven Central](https://img.shields.io/maven-central/v/io.scalaland/ocdquery_2.12.svg)](http://search.maven.org/#search%7Cga%7C1%7Cocdquery)
+[![License](http://img.shields.io/:license-Apache%202-green.svg)](http://www.apache.org/licenses/LICENSE-2.0.txt)
+
 Doobie queries generated using higher-kinded data.
 
 ## What does it mean?