show installed dependencies before running tests

Author: craue

.travis.yml

@@ -31,6 +31,8 @@ install:
   - if [ "${TRAVIS_PHP_VERSION}" != 'hhvm' ]; then mv ~/.phpenv/versions/$(phpenv version-name)/etc/conf.d/xdebug.ini xdebug.ini; fi;
   # install dependencies using Composer
   - bash .travis_install_dependencies.sh
+  # show installed dependencies
+  - composer show
 
 before_script:
   - mkdir -p build/logs