docs(readme): move Greenkeeper badge

README.md

@@ -1,13 +1,11 @@
 [![Build status][travisci-image]][travisci-url] [![Coverage Status][coveralls-image]][coveralls-url] [![Quality Gate][quality-gate-image]][quality-gate-url]
 
-[![NPM dependencies][npm-dependencies-image]][npm-dependencies-url] [![Last commit][last-commit-image]][last-commit-url] [![Last release][release-image]][release-url] 
+[![NPM dependencies][npm-dependencies-image]][npm-dependencies-url] [![Greenkeeper badge](https://badges.greenkeeper.io/data-provider/memory.svg)](https://greenkeeper.io/) [![Last commit][last-commit-image]][last-commit-url] [![Last release][release-image]][release-url] 
 
 [![NPM downloads][npm-downloads-image]][npm-downloads-url] [![License][license-image]][license-url]
 
 ## Overview
 
-[![Greenkeeper badge](https://badges.greenkeeper.io/data-provider/memory.svg)](https://greenkeeper.io/)
-
 This package provides a [Data Provider][data-provider-url] for handling memory objects.
 
 * __Data Provider queries__ based on object keys.