Document is out of date.. added warning and link to llvm-config.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27858 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/UsingLibraries.html b/docs/UsingLibraries.html
index a9b6b07..9cb383d 100644
--- a/docs/UsingLibraries.html
+++ b/docs/UsingLibraries.html
@@ -23,6 +23,8 @@
   <p>Written by <a href="mailto:rspencer@x10sys.com">Reid Spencer</a></p>
 </div>
 
+Warning: This document is out of date, please see <a href="CommandGuide/html/llvm-config.html">llvm-config</a> for more information.
+
 <!-- ======================================================================= -->
 <div class="doc_section"><a name="abstract">Abstract</a></div>
 <div class="doc_text">