Add Purchase Order schedule_date field, similar to delivery_date in Sales Order
diff --git a/erpnext/buying/doctype/purchase_order/purchase_order.json b/erpnext/buying/doctype/purchase_order/purchase_order.json
index 3afbb33..0676403 100644
--- a/erpnext/buying/doctype/purchase_order/purchase_order.json
+++ b/erpnext/buying/doctype/purchase_order/purchase_order.json
@@ -3458,7 +3458,7 @@
  "issingle": 0, 
  "istable": 0, 
  "max_attachments": 0, 
- "modified": "2017-09-26 14:19:04.102534",
+ "modified": "2017-09-26 14:19:04.102534", 
  "modified_by": "Administrator", 
  "module": "Buying", 
  "name": "Purchase Order", 
diff --git a/erpnext/buying/doctype/purchase_order/tests/test_purchase_order.js b/erpnext/buying/doctype/purchase_order/tests/test_purchase_order.js
index 6605a65..a818992 100644
--- a/erpnext/buying/doctype/purchase_order/tests/test_purchase_order.js
+++ b/erpnext/buying/doctype/purchase_order/tests/test_purchase_order.js
@@ -20,7 +20,7 @@
 						{"rate": 100},
 						{"warehouse": 'Stores - '+frappe.get_abbr(frappe.defaults.get_default("Company"))}
 					],
-					[
+                    [
 						{"item_code": 'Test Product 1'},
 						{"schedule_date": frappe.datetime.add_days(frappe.datetime.now_date(), 1)},
 						{"expected_delivery_date": frappe.datetime.add_days(frappe.datetime.now_date(), 5)},