Fixed the incorrect links to Travis and CodeClimate in the main README

[skip ci]

Author: karmi

README.md

@@ -134,7 +134,7 @@ Article.create title: 'Test'
 
 ## Development
 
-[![Build Status](https://travis-ci.org/elastic/elasticsearch-ruby.svg?branch=master)](https://travis-ci.org/elastic/elasticsearch-ruby) [![Code Climate](https://codeclimate.com/github/elastic/elasticsearch-ruby/badges/gpa.svg)](https://codeclimate.com/github/elastic/elasticsearch-ruby)
+[![Build Status](https://travis-ci.org/elastic/elasticsearch-rails.svg?branch=master)](https://travis-ci.org/elastic/elasticsearch-rails) [![Code Climate](https://codeclimate.com/github/elastic/elasticsearch-rails/badges/gpa.svg)](https://codeclimate.com/github/elastic/elasticsearch-rails)
 
 To work on the code, clone the repository and install all dependencies first: