Test Repo as 1bit Repo

.gitmodules

@@ -1,6 +1,6 @@
 [submodule "Source/1BitSGD"]
 	path = Source/1BitSGD
-	url = https://git.codeplex.com/cntk1bitsgd
+	url = https://github.com/CNTK-components/1bittest/
 [submodule "Source/Multiverso"]
 	path = Source/Multiverso
 	url = https://github.com/Microsoft/Multiverso