Updated README

Author: lukemelas

README.md

@@ -1,8 +1,12 @@
 # EfficientNet PyTorch
 
-### Update (October 12, 2019)
+### Update (October 15, 2019)
 
-This update makes the Swish activation function more memory-efficient. It also addresses pull requests #72, #73, #85, and #86. Thanks to the authors of all the pull requests! 
+This update allows you to choose whether to use a memory-efficient Swish activation. The memory-efficient version is chosen by default, but it cannot be used when exporting using PyTorch JIT. For this purpose, we have also included a standard (export-friendly) swish activation function. To switch to the export-friendly version, simply call `model.set_swish(memory_efficient=False)` after loading your desired model. This update addresses issues [#88](https://github.com/lukemelas/EfficientNet-PyTorch/pull/88) and [#89](https://github.com/lukemelas/EfficientNet-PyTorch/pull/89).
+
+#### Update (October 12, 2019)
+
+This update makes the Swish activation function more memory-efficient. It also addresses pull requests [#72](https://github.com/lukemelas/EfficientNet-PyTorch/pull/72), [#73](https://github.com/lukemelas/EfficientNet-PyTorch/pull/73), [#85](https://github.com/lukemelas/EfficientNet-PyTorch/pull/85), and [#86](https://github.com/lukemelas/EfficientNet-PyTorch/pull/86). Thanks to the authors of all the pull requests! 
 
 ### Update (July 31, 2019)