Merge branch 'api_refactor' of https://github.com/NVIDIA/apex into api_refactor

README.md

@@ -103,7 +103,7 @@ python setup.py install [--cuda_ext] [--cpp_ext]
 Currently, `--cuda_ext` enables
 - Fused kernels that improve the performance and numerical stability of `apex.parallel.SyncBatchNorm`.
 - Fused kernels required to use `apex.optimizers.FusedAdam`.
-- Fused kernels required to use 'apex.normalization.FusedLayerNorm'.
+- Fused kernels required to use `apex.normalization.FusedLayerNorm`.
 
 `--cpp_ext` enables
 - C++-side flattening and unflattening utilities that reduce the CPU overhead of `apex.parallel.DistributedDataParallel`.