[CODEGEN] More robust llvm intrin handling, remove graph executor (#519)

Author: tqchen

apps/README.md

@@ -3,9 +3,9 @@ This folder contains various extension projects using TVM,
 they also serve as examples on how to use TVM in your own project.
 
 If you are interested in writing optimized kernels with TVM, checkout [TOPI: TVM Operator Inventory](../topi).
+If you are interested in end to end deep learning model compilation, checkout  [NNVM Compiler](https://github.com/dmlc/nnvm).
 
 - [extension](extension) How to extend TVM C++ api along with python API.
-- [graph_executor](graph_executor) Build nnvm graph executor with TVM.
 - [ios_rpc](ios_rpc) iOS RPC server.
 - [android_rpc](android_rpc) Android RPC server.
-- [howto_deploy](howto_depploy) Tutorial on how to deploy TVM with minimum code dependency.
+- [howto_deploy](howto_depploy) Tutorial on how to deploy TVM with minimum code dependency.