title the searchable dictionary app as "v2" because it includes significant
changes and it's worth highlighting the revision.
some revisions to the sample desciption.
a companion change to the resources navigation link will follow (to name it v2).

Change-Id: Ib11cae9e4cc753f76b45ae446ef9871fee674e7a
diff --git a/build/sdk.atree b/build/sdk.atree
index 3c92d08..d06ca34 100644
--- a/build/sdk.atree
+++ b/build/sdk.atree
@@ -97,7 +97,7 @@
 development/samples/Snake                    samples/${PLATFORM_NAME}/Snake
 development/samples/SoftKeyboard             samples/${PLATFORM_NAME}/SoftKeyboard
 development/samples/JetBoy                   samples/${PLATFORM_NAME}/JetBoy
-development/samples/SearchableDictionary     samples/${PLATFORM_NAME}/SearchableDictionary
+development/samples/SearchableDictionary     samples/${PLATFORM_NAME}/SearchableDictionaryV2
 development/samples/ContactManager           samples/${PLATFORM_NAME}/ContactManager
 development/samples/MultiResolution          samples/${PLATFORM_NAME}/MultiResolution
 development/samples/Wiktionary               samples/${PLATFORM_NAME}/Wiktionary