added todos: provenance information is not complete and check units of serializer return

wheat_production/serializers.py

@@ -10,6 +10,7 @@ from rest_framework.serializers import BaseSerializer
 
 def get_provenance(obj):
     """construct provenance information on wheat production dataset"""
+    # TODO: Fill right provenance information
     prov = OrderedDict([
         ('dataset_name', '?'),
         ('dataset_description', """Wheat production values for the globe at 5 arc minute resolution. The data are in 
@@ -43,6 +44,7 @@ class AggSerializer(BaseSerializer):
             vlength = len(val)
         except TypeError:
             vlength = 1
+        # TODO: check units below
         if vlength > 1:
             properties = OrderedDict([
                 ('agg_function', agg_function),