Fixed readme minor typo

Author: rogyar

README.md

@@ -2,7 +2,7 @@
 [![Open Source Helpers](https://www.codetriage.com/magento/magento2/badges/users.svg)](https://www.codetriage.com/magento/magento2)
 [![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/magento/magento2?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
 <h2>Welcome</h2>
-Welcome to Magento 2 installation! We're glad you chose to install Magento 2, a cutting edge, feature-rich eCommerce solution that gets results.
+Welcome to Magento 2 installation! We're glad you chose to install Magento 2, a cutting-edge, feature-rich eCommerce solution that gets results.
 
 The installation instructions that used to be here are now published on our GitHub site. Use the information on this page to get started or go directly to the <a href="http://devdocs.magento.com/guides/v2.0/install-gde/bk-install-guide.html" target="_blank">guide</a>.