Temporarily Remove Travis

Travis builds have been broken for ages, removing the badge and
git hook until the issue can be sorted out.  Tests are still running
on our internal Jenkins CI server, which we should be making
public in the near future

README.md

@@ -5,9 +5,6 @@ Official low-level client for Elasticsearch. Its goal is to provide common groun
 
 To maintain consistency across all the low-level clients (Ruby, Python, etc), clients accept simple associative arrays as parameters.  All parameters, from the URI to the document body, are defined in the associative array.
 
-| Branch | Unit Tests | Coverage |
-| ------ | ---------- | -------- |
-| [![Latest Stable Version](https://poser.pugx.org/elasticsearch/elasticsearch/v/stable.png)](https://packagist.org/packages/elasticsearch/elasticsearch) | [![Build Status](https://travis-ci.org/elasticsearch/elasticsearch-php.png?branch=master)](https://travis-ci.org/elasticsearch/elasticsearch-php) | [![Coverage Status](https://coveralls.io/repos/elasticsearch/elasticsearch-php/badge.png?branch=master)](https://coveralls.io/r/elasticsearch/elasticsearch-php?branch=master) |
 
 Features
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