Documentation and examples improvements


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51739 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvmc2/examples/Simple.td b/tools/llvmc2/examples/Simple.td
index d00132a..88d4f0e 100644
--- a/tools/llvmc2/examples/Simple.td
+++ b/tools/llvmc2/examples/Simple.td
@@ -1,4 +1,6 @@
 // A simple wrapper for gcc.
+// To compile, use this command:
+//    make TOOLNAME=llvmc_simple GRAPH=examples/Simple.td
 
 include "Common.td"