Remove TravisCI badge from readme.txt (#408)

* Remove TravisCI badge from readme.txt

* Remove TravisCI badge from README

Author: szepeviktor

README.md

@@ -13,7 +13,7 @@ Back your WP Object Cache with Redis, a high-performance in-memory storage backe
 
 ## Description ##
 
-[![Travis CI](https://travis-ci.org/pantheon-systems/wp-redis.svg?branch=master)](https://travis-ci.org/pantheon-systems/wp-redis) [![CircleCI](https://circleci.com/gh/pantheon-systems/wp-redis/tree/master.svg?style=svg)](https://circleci.com/gh/pantheon-systems/wp-redis/tree/master)
+[![CircleCI](https://circleci.com/gh/pantheon-systems/wp-redis/tree/master.svg?style=svg)](https://circleci.com/gh/pantheon-systems/wp-redis/tree/master)
 
 For sites concerned with high traffic, speed for logged-in users, or dynamic pageloads, a high-speed and persistent object cache is a must. You also need something that can scale across multiple instances of your application, so using local file caches or APC are out.
 

readme.txt

@@ -11,7 +11,7 @@ Back your WP Object Cache with Redis, a high-performance in-memory storage backe
 
 == Description ==
 
-[![Travis CI](https://travis-ci.org/pantheon-systems/wp-redis.svg?branch=master)](https://travis-ci.org/pantheon-systems/wp-redis) [![CircleCI](https://circleci.com/gh/pantheon-systems/wp-redis/tree/master.svg?style=svg)](https://circleci.com/gh/pantheon-systems/wp-redis/tree/master)
+[![CircleCI](https://circleci.com/gh/pantheon-systems/wp-redis/tree/master.svg?style=svg)](https://circleci.com/gh/pantheon-systems/wp-redis/tree/master)
 
 For sites concerned with high traffic, speed for logged-in users, or dynamic pageloads, a high-speed and persistent object cache is a must. You also need something that can scale across multiple instances of your application, so using local file caches or APC are out.