frappe/erpnext — pull request #2186 by sbkolate (2014-09-12 12:33:39+00:00)
Title:  Changes for Recurring PO/PI 

Changes made to Purchase Order/Purchase Invoices referring pull request #2109 - which was for Sales Orders/Sales Invoices.

This would add a feature to set Purchase Orders/Invoices to recur periodically.

Has been tested locally, please review and let me know if any changes are requried.