Initial documentation for dmaap/messagerouter

Creating master document structure for dmaap/messagerouter project.
modified .gitmodules.

Issue-id: DMAAP-69
Change-Id: I4b9596be07ddbaf9e79b3b85ef4ec8886c8041b2
Signed-off-by: sg481n <sg481n@att.com>
diff --git a/.gitmodules b/.gitmodules
index 98ed263..8eb97cd 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -83,3 +83,8 @@
 [submodule "docs/submodules/modeling/modelspec.git"]
 	path = docs/submodules/modeling/modelspec.git
 	url = ../modeling/modelspec
+[submodule "docs/submodules/dmaap/messagerouter/messageservice.git"]
+	path = docs/submodules/dmaap/messagerouter/messageservice.git
+	url = ../dmaap/messagerouter/messageservice
+        branch = .
+        ignore = dirty