Add a toc file for the plugin documentation

At Google this file is required to host the plugin documentation.

Signed-off-by: Edwin Kempin <ekempin@google.com>
Change-Id: I77ae7eab371562b89f8c7ef49b13df797aa3b123

src/main/resources/Documentation/toc.md

diff --git a/src/main/resources/Documentation/toc.md b/src/main/resources/Documentation/toc.md
new file mode 100644
index 0000000..8e494fe
--- /dev/null
+++ b/src/main/resources/Documentation/toc.md
@@ -0,0 +1,10 @@
+### User Guides
+* [Syntax](syntax.html)
+* [REST API](rest-api.html)
+
+### Admin Guides
+* [Configuration](config.html)
+
+### Contributor Guides
+* [Build](build.html)
+