Merge pull request #182 from tynes/coverage

readme: add code coverage

Author: boymanjor

README.md

@@ -1,5 +1,8 @@
 # HSD
 
+[![Build Status][circleci-status-img]][circleci-status-url]
+[![Coverage Status][coverage-status-img]][coverage-status-url]
+
 **HSD** is an implementation of the [Handshake][handshake] Protocol.
 
 ## Install
@@ -383,3 +386,7 @@ See LICENSE for more info.
 [unbound]: https://www.nlnetlabs.nl/projects/unbound/download/
 [hnsd]: https://github.com/handshake-org/hnsd
 [airdrop]: https://github.com/handshake-org/hs-airdrop
+[coverage-status-img]: https://codecov.io/gh/handshake-org/hsd/badge.svg?branch=master
+[coverage-status-url]: https://codecov.io/gh/handshake-org/hsd?branch=master
+[circleci-status-img]: https://circleci.com/gh/handshake-org/hsd/tree/master.svg?style=shield
+[circleci-status-url]: https://circleci.com/gh/handshake-org/hsd/tree/master