Add Go Cover and Go Report Card badges to the README file

Signed-off-by: Tim Heckman <t@heckman.io>

README.md

@@ -3,6 +3,8 @@
 [![GoDoc](https://img.shields.io/badge/godoc-reference-blue.svg?style=flat)](https://godoc.org/github.com/theckman/go-ipdata)
 [![Latest Git Tag](https://img.shields.io/github/tag/theckman/go-ipdata.svg)](https://github.com/theckman/go-ipdata/releases)
 [![Travis master Build Status](https://img.shields.io/travis/theckman/go-ipdata/master.svg?label=TravisCI)](https://travis-ci.org/theckman/go-ipdata/branches)
+[![Go Cover Test Coverage](https://gocover.io/_badge/github.com/theckman/go-ipdata)](https://gocover.io/github.com/theckman/go-ipdata)
+[![Go Report Card](https://goreportcard.com/badge/github.com/theckman/go-ipdata)](https://goreportcard.com/report/github.com/theckman/go-ipdata)
 
 Package ipdata is a client for the https://ipdata.co API. It provides functions
 for looking up data, as well as parsing the data in a programmatic way. The