Update travis config

.travis.yml

@@ -1,12 +1,21 @@
 language: php
 
 php:
+  - 5.5.9
   - 5.5
   - 5.6
+  - 7.0
   - hhvm
 
-before_script:
-  - composer self-update
-  - composer install --prefer-source --no-interaction --dev
+sudo: false
 
-script: vendor/bin/phpspec run
+install:
+  - travis_retry composer install --no-interaction --prefer-source
+
+script:
+  - if [ "$TRAVIS_PHP_VERSION" != "5.5.9" ] && [ "$TRAVIS_PHP_VERSION" != "5.5" ] && [ "$TRAVIS_PHP_VERSION" != "5.6" ]; then vendor/bin/phpunit; fi
+  - if [ "$TRAVIS_PHP_VERSION" == "5.5.9" ] || [ "$TRAVIS_PHP_VERSION" == "5.5" ] || [ "$TRAVIS_PHP_VERSION" == "5.6" ]; then vendor/bin/phpunit --coverage-clover build/logs/clover.xml; fi
+
+after_script:
+  - if [ "$TRAVIS_PHP_VERSION" == "5.5.9" ] || [ "$TRAVIS_PHP_VERSION" == "5.5" ] || [ "$TRAVIS_PHP_VERSION" == "5.6" ]; then wget https://scrutinizer-ci.com/ocular.phar; fi
+  - if [ "$TRAVIS_PHP_VERSION" == "5.5.9" ] || [ "$TRAVIS_PHP_VERSION" == "5.5" ] || [ "$TRAVIS_PHP_VERSION" == "5.6" ]; then php ocular.phar code-coverage:upload --format=php-clover build/logs/clover.xml; fi