Add 'user friendly' datastore API.

service/datastore/types.go

Index: service/datastore/types.go
diff --git a/service/datastore/types.go b/service/datastore/types.go
index d882851faaf08a767a97a2814729c2765f5ce746..97bf2eac84202b6e8af3ef55644d6fc1c6842848 100644
--- a/service/datastore/types.go
+++ b/service/datastore/types.go
@@ -14,8 +14,8 @@ type ByteString []byte
 // GeoPoint represents a location as latitude/longitude in degrees.
 //
 // You probably shouldn't use these, but their inclusion here is so that the
-// Datastore can interact (and round-trip) correctly with other datastore API
-// implementations.
+// datastore service can interact (and round-trip) correctly with other
+// datastore API implementations.
 type GeoPoint struct {
 	Lat, Lng float64
 }