Added some debugging commands

Trying to figure out where I should be echoing the zend_extension line. On my
local system I slapped it to the bottom of the xdebug conf.d file. Unsure if
that directory and/or file even exist.

.travis.yml

@@ -9,6 +9,8 @@ matrix:
     - php: hhvm
 
 install:
+  - ls -al /etc/
+  - cat /etc/php.ini
   - composer install
   - cd vendors/php-test-helpers
   - phpize
@@ -16,6 +18,7 @@ install:
   - make
   - sudo make install
   - echo "zend_extension=test_helpers.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini
+  - cat /etc/php.ini
   - cd ../../
 
 script: