Update travis setup.

Signed-off-by: crynobone <[email protected]>

.travis.yml

@@ -4,11 +4,12 @@ php:
   - 5.4
   - 5.5
   - 5.6
+  - 7.0
   - hhvm
 
 before_script:
   - travis_retry composer self-update
-  - travis_retry composer require satooshi/php-coveralls:~0.6 --prefer-source --no-interaction --dev
+  - if [[ "$TRAVIS_PHP_VERSION" == *5.6* ]]; then travis_retry composer require "satooshi/php-coveralls:~0.6.1" "symfony/yaml=~2.0" --prefer-source --no-interaction --dev; else travis_retry composer install --prefer-source --no-interaction; fi
 
 script: phpunit -c phpunit.xml --coverage-text
 
@@ -17,5 +18,6 @@ after_script:
 
 matrix:
   allow_failures:
+    - php: 7.0
     - php: hhvm
-  fash_finish: true
+  fast_finish: true