merged branch davedevelopment/force-travis-2.1 (PR #644)

This PR was merged into the master branch.

Commits
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e11b93e3 Force travis to use 2.1.*

Discussion
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Force travis to use 2.1.* now 2.2 has a stable release

.travis.yml

@@ -7,6 +7,7 @@ env:
 before_script:
     # symfony/*
     - sh -c "if [ '$SYMFONY_DEPS_VERSION' = '2.2' ]; then sed -i 's/>=2.1,<2.3-dev/2.2.*@dev/g' composer.json; composer require --no-update 'symfony/property-access:2.2.*@dev'; composer update --dev --prefer-source; fi"
+    - sh -c "if [ '$SYMFONY_DEPS_VERSION' = '2.1' ]; then sed -i 's/>=2.1,<2.3-dev/2.1.*@dev/g' composer.json; composer update --dev --prefer-source; fi"
     - composer install --dev --prefer-source
 
 php: