Exclude v1 branches from Travis

Instead of allowing only v2.
Branches which didn't target v2 BUT related to v2 weren't tested on Travis

.travis.yml

@@ -34,9 +34,11 @@ matrix:
     allow_failures:
         - php: hhvm
 
+# exclude v1 branches
 branches:
-    only:
-        - v2
+    except:
+        - master
+        - dev
 
 before_script:
     - if [[ $TRAVIS_PHP_VERSION != hhvm ]]; then echo "memory_limit=-1" >> ~/.phpenv/versions/$(phpenv version-name)/etc/conf.d/travis.ini; fi;