docs: Show TOC for GettingStarted.rst.

This is a pretty lengthy document, so put the table of contents in your
face so that it's easier to scope out the content.

This document is a mess currently and needs to be
refactored/revised/split-up.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170646 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/GettingStarted.rst b/docs/GettingStarted.rst
index d99acbb..e37eab9 100644
--- a/docs/GettingStarted.rst
+++ b/docs/GettingStarted.rst
@@ -4,6 +4,9 @@
 Getting Started with the LLVM System  
 ====================================
 
+.. contents::
+   :local:
+
 Overview
 ========