added unicode literals import to supplier quotation patch
diff --git a/erpnext/patches/july_2012/supplier_quotation.py b/erpnext/patches/july_2012/supplier_quotation.py
index 023ead2..84809e5 100644
--- a/erpnext/patches/july_2012/supplier_quotation.py
+++ b/erpnext/patches/july_2012/supplier_quotation.py
@@ -1,3 +1,4 @@
+from __future__ import unicode_literals
 def execute():
 	"""sync supplier quotatoin and create supplier quotation mappers"""
 	from webnotes.model.sync import sync