updated readme with codecov flag/icon

Author: jepp3

README.md

@@ -1,5 +1,5 @@
-[![Build Status](https://travis-ci.org/code-brewery/untappd.svg?branch=master)](https://travis-ci.org/code-brewery/untappd)
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+[![Build Status](https://travis-ci.org/code-brewery/untappd.svg?branch=master)](https://travis-ci.org/code-brewery/java-ormen)
+[![codecov.io](http://codecov.io/github/code-brewery/java-ormen/coverage.svg?branch=master)](http://codecov.io/github/code-brewery/java-ormen?branch=master)
 # java-ormen
 Object relation mapping library for REST API:s in Java. It is designed to build applications that are powered by a RESTful API instead of a database.