Normalize code

djstripe/settings.py

@@ -14,7 +14,7 @@
 
 INVOICE_FROM_EMAIL = getattr(settings, "DJSTRIPE_INVOICE_FROM_EMAIL", "[email protected]")
 PAYMENTS_PLANS = getattr(settings, "DJSTRIPE_PLANS", {})
-HIERARCHY_PLANS = getattr(settings, "DJSTRIPE_HIERARCHY_PLANS", {})
+DJSTRIPE_PLAN_HIERARCHY = getattr(settings, "DJSTRIPE_HIERARCHY_PLANS", {})
 
 # Sort the PAYMENT_PLANS dictionary ascending by price.
 PAYMENT_PLANS = OrderedDict(sorted(PAYMENTS_PLANS.items(), key=lambda t: t[1]['price']))

djstripe/templatetags/djstripe_tags.py

@@ -2,7 +2,7 @@
 from __future__ import division
 
 from django.template import Library
-from ..settings import HIERARCHY_PLANS
+from ..settings import DJSTRIPE_PLAN_HIERARCHY
 
 register = Library()
 
@@ -31,7 +31,7 @@ def djstripe_plan_level(name):
 
     Use: {{ <plan_name>|djstripe_plan_level }}
 
-    Custom settings setup need it, please see the documentation for details.
+    Note: Custom settings setup is needed, please see the documentation for details.
     """
     level = -1
     for config_level in HIERARCHY_PLANS.values():