update readme

Author: saimaz

README.md

@@ -3,7 +3,7 @@
 Introducing Elasticsearch DSL library to provide objective query builder for [Elasticsearch bundle](https://github.com/ongr-io/ElasticsearchBundle) and [elasticsearch-php](https://github.com/elastic/elasticsearch-php) client. You can easily build any Elasticsearch query and transform it to an array.
 
 If you need any help, [stack overflow](http://stackoverflow.com/questions/tagged/ongr)
-is the preffered and recommended way to ask ONGR support questions.
+is the preferred and recommended way to ask ONGR support questions.
 
 [![Build Status](https://travis-ci.org/ongr-io/ElasticsearchDSL.svg?branch=master)](https://travis-ci.org/ongr-io/ElasticsearchDSL)
 [![codecov](https://codecov.io/gh/ongr-io/ElasticsearchDSL/branch/master/graph/badge.svg)](https://codecov.io/gh/ongr-io/ElasticsearchDSL)
@@ -12,7 +12,7 @@ is the preffered and recommended way to ask ONGR support questions.
 [![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/ongr-io/ElasticsearchDSL/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/ongr-io/ElasticsearchDSL/?branch=master)
 
 
-If you like this library help me to develop it by buying a cup of coffee
+If you like this library, help me to develop it by buying a cup of coffee
 
 <a href="https://www.buymeacoffee.com/zIKBXRc" target="_blank"><img src="https://www.buymeacoffee.com/assets/img/custom_images/orange_img.png" alt="Buy Me A Coffee" style="height: 41px !important;width: 174px !important;box-shadow: 0px 3px 2px 0px rgba(190, 190, 190, 0.5) !important;-webkit-box-shadow: 0px 3px 2px 0px rgba(190, 190, 190, 0.5) !important;" ></a>