Create TransactionSearch.php

API call to search for transaction (based on start date to begin)
Update Response.php

Edit of ExtractKeyValues to take in consideration when more than 10 results are returned (mainly for TransactionSearch call)
Merge pull request #16 from bibear/patch-2

Update Response.php - Edit of ExtractKeyValues to take in consideration when more than 10 results are returned (mainly for TransactionSearch call)
Merge pull request #15 from bibear/patch-1

Create TransactionSearch.php - API call to search for transaction
adding full support for transaction search, adding unit test for transaction search
fix travis
fix travis
fix travis
fix php 5.4 error
cleanup
Merge pull request #17 from steverhoades/add-tests

adding full support for transaction search, adding unit test for transac...
update README add TransactionSearch example, Supported APIs and PHP version information
Merge pull request #18 from steverhoades/dev-master

update README add TransactionSearch example, Supported APIs and PHP vers...
fix typo, add isvalid test to TransactionSearchTest
Merge pull request #19 from steverhoades/add-tests

fix typo, add isvalid test to TransactionSearchTest
updating integration test for SetExpressCheckout
Merge pull request #21 from steverhoades/update-integration

updating integration test for SetExpressCheckout
update integration test
Merge pull request #22 from steverhoades/update-test

update integration test
fixes #23 - fixed error in docs