Test that package installs successfully

Author: amacneil

.travis.yml

@@ -16,6 +16,5 @@ before_script:
   - composer --version
   - composer require symfony/http-foundation:${SYMFONY_VERSION} --no-update
   - composer require guzzle/http:${GUZZLE_VERSION} --no-update
-  - composer install -n --dev --prefer-source
 
-script: vendor/bin/phpcs --standard=PSR2 src && vendor/bin/phpunit --coverage-text
+script: composer install -n --dev --prefer-source