Mirroring Orhestra\Testbench travis config

.travis.yml

@@ -1,8 +1,39 @@
 language: php
+
+sudo: false
+
 php:
-  - '5.4'
-  - '5.5'
-  - '5.6'
-  - '7.0'
-  - '7.1'
-  - hhvm
+  - 5.6
+  - 7.0
+  - 7.1
+
+env:
+  global:
+    - setup=basic
+    - coverage=no
+
+before_script:
+  - composer config discard-changes true
+  - if [[ $setup = 'basic' ]]; then travis_retry composer install --prefer-dist --no-interaction; fi
+  - if [[ $setup = 'stable' ]]; then travis_retry composer update --prefer-dist --no-interaction --prefer-stable; fi
+  - if [[ $setup = 'lowest' ]]; then travis_retry composer update --prefer-dist --no-interaction --prefer-lowest --prefer-stable; fi
+  - if [[ $setup = 'coveralls' ]]; then travis_retry composer require "satooshi/php-coveralls=~0.7" --prefer-dist --no-interaction --dev; fi
+
+script:
+  - if [[ $coverage = 'yes' ]]; then ./vendor/bin/phpunit -c phpunit.xml --coverage-clover build/logs/clover.xml; fi
+  - if [[ $coverage = 'no' ]]; then ./vendor/bin/phpunit -c phpunit.xml; fi
+
+after_script:
+  - if [[ $setup = 'coveralls' ]]; then php vendor/bin/coveralls -v; fi
+
+matrix:
+  include:
+    - php: 5.6
+      env: setup=lowest
+    - php: 5.6
+      env: setup=stable
+    - php: 5.6
+      env: setup=coveralls coverage=yes
+  allow_failures:
+    - env: setup=coveralls coverage=yes
+  fast_finish: true