Merge pull request ARM-software#74 from nSircombe/feature/r21.07

Minor fixes to build.sh

Merge pull request ARM-software#68 from nSircombe/feature/r21.06

TensorFlow-aarch64 and PyTorch-aarch64 r21.06 release.

Fixes files named incorectly following patch.

Change-Id: Ie575a8797520ba0732ba6e35b0b0a2a2c249a9b8

Merge pull request ARM-software#61 from nSircombe/feature/pytorch-exa…

…mples

Adds examples folder to pytorch-aarch64

Update README.md