Labbeemint / syspro-ruby

Added InvSws to add warehouses to stock code

* WIP

* Added InvQry

Partial complete, not all data is parsed out of result XML
Current project does not need the result yet

* WIP

* Added ComsFn for custom form data and finished off PorToi to send new Purchase Orders

* Finished

Add Purchase Order with header and lines
Fixes #752 in LMT 2.0