Fix for failing build

Author: tersmitten

.travis.yml

@@ -34,7 +34,7 @@ before_script:
   - git clone -b master https://github.com/FriendsOfCake/travis.git --depth 1 ../travis
   - ../travis/before_script.sh
   - pwd && ls
-  - wget https://github.com/nicolasff/phpredis/archive/2.2.5.zip -O php-redis.zip && unzip php-redis.zip && cd phpredis-2.2.5/ && mkdeb.sh && dpkg -i phpredis-2.2.5_*.deb
+  - wget https://github.com/nicolasff/phpredis/archive/2.2.5.zip -O php-redis.zip && unzip php-redis.zip && cd phpredis-2.2.5/ && ./mkdeb.sh && dpkg -i phpredis-2.2.5_*.deb
 
 script:
   - ../travis/script.sh