Another random update again :coffee:
* Adding sample session key in sample/application/config/config.php
* Updating PROJECT_DIR in tests/bootstrap.php
* Adding English translation (just kidding, I'd just duplicate Indonesian translation folder :grin:)
* Updating Error Template in sample/application/core/MY_Exceptions.php
* Adding sample database configuration
Update configuration.sh script and make things clean
Adding some (fake) Test cases
Fixing sample test cases class
Adding travis environment to sample database configurations