Merge branch 'travis-improvements' of https://github.com/duncan3dc/symfony-console-completion into duncan3dc-travis-improvements

Author: stecman

.gitignore

@@ -2,3 +2,4 @@ vendor
 .idea
 /build/
 phpunit.xml
+/composer.lock

.travis.yml

@@ -1,12 +1,23 @@
 language: php
 
 php:
-  - 5.5
-  - 5.4
   - 5.3
+  - 5.4
+  - 5.5
+  - 5.6
+  - 7.0
 
-before_script:
+env:
+  - COMPOSER_OPTS=""
+  - COMPOSER_OPTS="--prefer-lowest"
+
+before_install:
   - sudo apt-get update -qq
   - sudo apt-get install -y bash zsh
+
+install:
   - composer self-update
-  - composer install --dev --prefer-dist
+  - composer update $COMPOSER_OPTS
+
+script:
+  - phpunit tests

composer.json

@@ -13,7 +13,7 @@
         "symfony/console": "~2.2"
     },
     "require-dev": {
-        "phpunit/phpunit": "~4.1"
+        "phpunit/phpunit": "~4.4"
     },
     "autoload": {
         "psr-4": {