#4 Created test_read_list_sql() unit test.
#4 Created test_index_returns_response()
#4 Create Expense Model
Update Utf8 line 41 to work with PHPUnit
merge
Setup CodeIgniter to run with PHPUnit
#4 Integrated CodeIgniter with PHPUnit and created testGetAllExpenses() in ExpenseRepositoryTest.php
#task-4 Implementing Expense List API