message: Update README.md with VAL_MODE and USE_TENSORCORE
diff: @@ -40,12 +40,21 @@ $ cd build
  $ cmake -DCMAKE_BUILD_TYPE=Debug -DSM=XX ..
  $ make
  ```
  -### Build with Mixed Precision (WMMA) Support ###
  +### Build with Mixed Precision (TensorCore) Support ###
  To use mixed precision training, enable USE_WMMA and set SCALER to 128/256/512/1024 by:
  ```shell
  $ mkdir -p build
  $ cd build
  -$ cmake -DSM=XX -DUSE_WMMA=ON -DSCALER=YYY ..
  +$ cmake -DSM=XX -DUSE_TENSORCORE=ON -DSCALER=YYY ..
  +```
  +
  +### Build with verification mode ###
  +In this mode loss of trainig will be shown as the average of `eval_batches` result. Only one thread and chunk will be used in DataReader. Performance will be lower than turning off.
  +```shell
  +$ mkdir -p build
  +$ cd build
  +$ cmake -DVAL_MODE=ON ..
  +$ make
  ```
  ## Run ##
  