include laravel in unit testing

Author: concentriccircles

.travis.yml

@@ -6,8 +6,15 @@ php:
   - 5.6
   - hhvm
 
+env:
+  - LARAVEL_VERSION="4.2.*"
+  - LARAVEL_VERSION="5.0.*"
+
 before_script:
   - travis_retry composer self-update
+  - travis_retry composer require laravel/framework:${LARAVEL_VERSION} --no-update
+  - travis_retry composer require illuminate/support:${LARAVEL_VERSION} --no-update
+  - travis_retry composer require illuminate/database:${LARAVEL_VERSION} --no-update
   - travis_retry composer install --prefer-source --no-interaction --dev
 
 script: phpunit