Added GAE datastore properties that are not used in Melange, just for reference.

GSoC2010DataSeeder.wiki

diff --git a/GSoC2010DataSeeder.wiki b/GSoC2010DataSeeder.wiki
index 579faca..f5f2b15 100644
--- a/GSoC2010DataSeeder.wiki
+++ b/GSoC2010DataSeeder.wiki
@@ -173,6 +173,15 @@
     * *FixedPhoneNumberProvider* - returns a fixed phone number
     * *RandomPhoneNumberProvider* - returns a random phone number
 
+==== GAE properties not used by Melange ====
+  * ByteStringProperty
+  * TimeProperty
+  * blobstore.BlobReferenceProperty
+  * CategoryProperty
+  * GeoPtProperty
+  * IMProperty
+  * PostalAddressProperty
+  * RatingProperty
 
 === Python fixtures ===