Feature/testing

[tarikhagustia]

Adding phpunit test to make sure all function work, this env need to running unittest

BCA_USERNAME=
BCA_PASSWORD=

to run unit testing just run this command

./vendor/bin/phpunit -c phpunit.xml    

[kadekjayak]

this is nice, i will merge it and do the cleanup later,
i'll spend my time on it next week,
thank you very much for your contribution ...