Fix sub-module issues

.travis.yml

@@ -9,8 +9,10 @@ before_script:
   - sh -c "psql -c 'DROP DATABASE IF EXISTS test;' -U postgres"
   - sh -c "psql -c 'create database test;' -U postgres"
   - sh -c "mysql -e 'create database IF NOT EXISTS test;'"
-  - sh -c "cd ./sys/db/"
-  - sh -c "git submodule init"
-  - sh -c "cd ../../"
+  - git submodule update --init
+  - cd sys/db
+  - git checkout master
+  - git pull origin master
+  - cd ../../
 
 script: php ./tests/index.php