Added transaction response and unit tests
Updated composer repo
Added configuration for running tests
Update README.md
Changed appropriate base classes for unit tests
Merge branch 'master' of https://github.com/petflow/litle
Added a function for determining if approved.
Merge branch 'master' of github.com:petflow/litle

Conflicts:
	src/Petflow/Litle/Transaction/SaleTransaction.php
	tests/UnitTestCase.php
	tests/unit/DuplicateTransactionTest.php
Removed some stuff and junk for now
Refactoring a bit