Attempt some firebird setup on travis

.travis.yml

@@ -10,6 +10,9 @@ php:
   - hhvm
   - nightly
 
+install:
+  dpkg-reconfigure firebird2.5-superclassic
+
 before_script:
   - psql -c 'DROP DATABASE IF EXISTS test;' -U postgres
   - psql -c 'create database test;' -U postgres
@@ -19,6 +22,12 @@ script:
   - mkdir -p build/logs
   - phpunit --coverage-clover build/logs/clover.xml
 
+addons:
+  apt:
+    packages:
+      - php5-interbase
+      - firebird2.5-superclassic
+
 after_script:
     - wget https://scrutinizer-ci.com/ocular.phar
     - php ocular.phar code-coverage:upload --format=php-clover build/logs/clover.xml