Drop Python 2.5 tests from Travis

.travis.yml

 language: python
 python:
-  - "2.5"
   - "2.6"
   - "2.7"
   - "3.2"

README.md

@@ -4,7 +4,7 @@ This library is based on [Maxmind's GeoIP C API](https://github.com/maxmind/geoi
 
 Tested with Python version 2.5, 2.6, 2.7, 3.2 and 3.3.
 
-[![Build Status](https://travis-ci.org/appliedsec/pygeoip.png)](https://travis-ci.org/appliedsec/pygeoip)
+[![Build Status](https://travis-ci.org/appliedsec/pygeoip.png)](https://travis-ci.org/appliedsec/pygeoip) [![Coverage Status](https://coveralls.io/repos/appliedsec/pygeoip/badge.png)](https://coveralls.io/r/appliedsec/pygeoip) [![Downloads](https://pypip.in/d/pygeoip/badge.png)](https://crate.io/packages/pygeoip)
 
 ## Installation ##