Update README.md

Author: adujardin

Diff for: src/README.md

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 ### Prerequisites
 
-- [ZED SDK 3.6](https://www.stereolabs.com/developers/) and its dependency [CUDA](https://developer.nvidia.com/cuda-downloads)
-- Python 3.6+ x64  (3.7 recommended)
+- [ZED SDK 3.7](https://www.stereolabs.com/developers/) and its dependency [CUDA](https://developer.nvidia.com/cuda-downloads)
+- Python 3.6+ x64  (3.7+ recommended)
 - C++ compiler (VS2017 recommended)
 - [Cython 0.26](http://cython.org/#download)
 - [Numpy 1.13.1](https://www.scipy.org/scipylib/download.html)