Update site information to reflect using cmake to build compiler-rt and not legacy makefiles.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@82608 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/www/index.html b/www/index.html
index 953b7fe..2a32d68 100644
--- a/www/index.html
+++ b/www/index.html
@@ -122,8 +122,11 @@
   
   <ul>
   <li>svn co http://llvm.org/svn/llvm-project/compiler-rt/trunk compiler-rt</li>
-  <li>cd compiler-rt</li>
+  <li>mkdir build</li>
+  <li>cd build</li>
+  <li>cmake ../compiler-rt</li>
   <li>make</li>
+  <li>make install</li>
   </ul>
   
   <p>Note that the library will probably only build out of the box on Darwin,