added unicode_literals import at start of each file
diff --git a/erpnext/selling/__init__.py b/erpnext/selling/__init__.py
index f8a457a..beb4975 100644
--- a/erpnext/selling/__init__.py
+++ b/erpnext/selling/__init__.py
@@ -1,3 +1,4 @@
+from __future__ import unicode_literals
 install_docs = [
 	{"doctype":"Role", "role_name":"Customer", "name":"Customer"},
 	{"doctype":"Role", "role_name":"Partner", "name":"Partner"},