Module for common address methods for Online/Windows Customer & Vendor models. Based on code from Nick Hammond. Closes #54
Merge pull request #56 from nickhammond/ampersand

Ampersand
Merge pull request #57 from nickhammond/account_detail_type_enum

Sync up the QboAccountDetailTypeEnum types
Online: Moved Shipping and Billing properties from the Invoice model to the InvoiceHeader model where they belong.
adding support for employees to be retrieved
Merge pull request #58 from epugh/master

Employee model and service objects.
add some tests for the service
Merge pull request #59 from epugh/master

added spec for Employee service
remove cut n paste line from vendor
we have new services!
First cut of time_activity seems to be working well.   Though I feel like much could be moved to /common between windows and online
Remove the validation from the included module as some Models that its mixed into do not actually possess the :name attribute. The validation on :name should be pushed down to the actual Models that have that attribute
merged from ruckus/quickeebooks master
fixes based on validations being cleaned up
formatting changes inspired by rbright/quickeebooks review
Slight tweaks from epugh PR