minor #1109 Explains why there is no need for fixtures (michaelKaefer)

This PR was merged into the master branch.

Discussion
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Explains why there is no need for fixtures

Commits
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cbff496 Explains why there is no need for fixtures

Author: javiereguiluz

.travis.yml

@@ -39,6 +39,9 @@ install:
   - ./bin/phpunit install
 
 script:
+  # we do not need to run the demo app's fixtures before running our tests because the test
+  # database is tracked with git in data/database_test.sqlite and already contains all fixtures 
+  # needed to run the tests 
   - ./bin/phpunit
   # this checks that the source code follows the Symfony Code Syntax rules
   - '[[ "$TRAVIS_PHP_VERSION" == "7.4" ]] || ./vendor/bin/php-cs-fixer fix --diff --dry-run -v'