Add a short sleep for the travis build after elasticsearch has been started.

Author: cjsaylor

.travis.yml

@@ -14,6 +14,7 @@ env:
 before_install:
   - curl -O $ES_PKG && sudo dpkg -i --force-confnew $(printf 'elasticsearch-%s.deb' $DB)
   - sudo service elasticsearch start
+  - sleep 3
 
 install:
   - composer install --dev