Added two simple Queue Item tests per oDesk job invitation
+ error_reporting(E_ALL) in tests bootstrap file to improve portability
#45 fixed undefined error and default value for response field
Rest/Request fixes and tests:

1. + tests
2. implemented makeRequest()
3. Http client instantiation moved from __call() to Instance() for testing purposes
4. $apiUrl became private b/c there are getter and setter implemented already
fix ServiceBaseTest::testNewQueueItem()
Enable thrid-party classes autoloading in tests/bootstrap.php.
Show message 'Composer not initialized.' if vendor/autoload.php not found
Rest/Request: create Client if its not passed to the constructor for backward compatibility
Authentication/HttpAuth fixes and tests
Authentication/QueryString: fixes and tests
fixed typo
Merge pull request #46 from dangoodman/master

Merging work from dangoodman into develop