minor #87 Added Symfony Yaml 3.0 as a valid dep (fabpot)

This PR was merged into the 2.1.x-dev branch.

Discussion
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Added Symfony Yaml 3.0 as a valid dep

Commits
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d52008b Added Symfony Yaml 3.0 as a valid dep

.travis.yml

@@ -6,15 +6,20 @@ cache:
     directories:
         - $HOME/.composer/cache/files
 
-php:
-    - 5.3
-    - 5.4
-    - 5.5
-    - 5.6
-    - 7.0
-    - hhvm
+matrix:
+    include:
+        - php: 5.3
+          env: COMPOSER_FLAGS='--prefer-lowest --prefer-stable'
+        - php: 5.4
+        - php: 5.5
+        - php: 5.6
+        - php: 7.0
+          env: DEPENDENCIES=dev
+        - php: hhvm
 
-install: composer install
+before_script:
+    - if [ "$DEPENDENCIES" = "dev" ]; then perl -pi -e 's/^}$/,"minimum-stability":"dev"}/' composer.json; fi;
+    - composer update $COMPOSER_FLAGS
 
 script: phpunit --coverage-text --coverage-clover=coverage.clover
 

composer.json

@@ -12,7 +12,7 @@
     ],
     "require": {
         "php": ">=5.3.3",
-        "symfony/yaml": "~2.0"
+        "symfony/yaml": "~2.3|~3.0"
     },
     "require-dev": {
         "composer/composer": "1.0.*@dev",