Mention the cmake build guide on the main docs page.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141674 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/index.html b/docs/index.html
index 8f82cf9..b647b29 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -63,6 +63,11 @@
 Everything from unpacking and compilation of the distribution to execution of
 some tools.</li>
 
+<li><a href="CMake.html">LLVM CMake guide</a> - An addendum to the main Getting
+Started guide for those using the <a href="http://www.cmake.org/">CMake build
+system</a>.
+</li>
+
 <li><a href="GettingStartedVS.html">Getting Started with the LLVM System using
 Microsoft Visual Studio</a> - An addendum to the main Getting Started guide for
 those using Visual Studio on Windows.</li>