Adding better default settings for yml files, new methods to FeatureContext.php
Changes to be committed:
modified:   README.md
modified:   composer.json
new file:   tests/behat/default.local.yml
new file:   tests/behat/features/HomePage.feature
modified:   tests/behat/features/bootstrap/FeatureContext.php
deleted:    tests/behat/features/env.feature
deleted:    tests/behat/local.yml
modified:   tests/behat/test.yml