Dump logs on failure.

.travis.yml

@@ -24,9 +24,13 @@ before_script:
 
 script: php tests/test_install.php -d $DB
 
+# If a failure occured then dump out a bunch of logs for debugging purposes.
 after_failure:
   - sudo cat /etc/nginx/sites-enabled/default
   - sudo cat /var/log/nginx/error.log
+  - sudo cat /var/log/php_errors.log
+  - ls /var/log
+  - sudo php -i
 
 # configure notifications (email, IRC, campfire etc)
 #notifications: