Update README.md

Updated badges

Author: keilw

README.md

@@ -3,13 +3,9 @@ Tools for JSR 363 and Units of Measurement
 
 [![Build Status](https://travis-ci.org/unitsofmeasurement/uom-tools.svg?branch=master)](https://travis-ci.org/unitsofmeasurement/uom-tools)
 [![Circle CI](https://circleci.com/gh/unitsofmeasurement/uom-tools.svg?style=svg)](https://circleci.com/gh/unitsofmeasurement/uom-tools) 
-[![License](http://img.shields.io/badge/license-BSD3-blue.svg?style=flat-square)](http://opensource.org/licenses/BSD-3-Clause)
+[![License](http://img.shields.io/badge/license-BSD3-blue.svg)](http://opensource.org/licenses/BSD-3-Clause)
 
 [![Stories in Ready](https://badge.waffle.io/unitsofmeasurement/uom-tools.png?label=ready&title=Ready)](https://waffle.io/unitsofmeasurement/uom-tools)
 [![Stories in Progress](https://badge.waffle.io/unitsofmeasurement/uom-tools.png?label=in%20progress&title=In Progress)](https://waffle.io/unitsofmeasurement/uom-tools)
 
 [![Throughput Graph](https://graphs.waffle.io/unitsofmeasurement/uom-tools/throughput.svg)](https://waffle.io/unitsofmeasurement/uom-tools/metrics)
-
- Reference comparison for drone.io (currently shows **wrong** status, look at the actual build)
- 
-[![Build Status](https://drone.io/github.com/unitsofmeasurement/uom-tools/status.png)](https://drone.io/github.com/unitsofmeasurement/uom-tools/latest)