[docs] Sphinxify GettingStartedVS. Patch by Mikael Lyngvig!

llvm-svn: 158947
diff --git a/llvm/docs/userguides.rst b/llvm/docs/userguides.rst
index f1267dc..1b44c48 100644
--- a/llvm/docs/userguides.rst
+++ b/llvm/docs/userguides.rst
@@ -8,6 +8,7 @@
 
    CommandGuide/index
    DeveloperPolicy
+   GettingStartedVS
    FAQ
    Lexicon
    Packaging