Merge pull request #16 from WalrusSoup/Jay-Dev

qbXML objects for CreditMemos, Kohana example/documentation.
Journal entry and vendor filter by name examples.
Merge branch 'master' of https://github.com/consolibyte/quickbooks-php
v2 SyncStatus example.
Workaround for servers with magic quotes on.
Merge pull request #17 from WalrusSoup/Jay-Dev

Added new functionality to generate credit card refunds.
Payment method query support for v3.
Merge branch 'master' of https://github.com/consolibyte/quickbooks-php
Example of updating using v3.
Removing some deprecated stuff.
Objects for tax codes.
Tweaks.
Purchase Order v3 query support.
PO objects for v3.
Debugging.
Update README.md
Update README.md
Update README.md
Update README.md
Bug fixes.