Nemo readme revisions (NVIDIA#9129)

* REvisions to NeMo ReadMe

* NeMo Readme.rst revisions

* Update README.rst

Co-authored-by: Eric Harper <[email protected]>
Signed-off-by: jgerh <[email protected]>

* ReadMe updates

* ReadMe Updates

* Updates to NeMo Readme with new license information

* NeMo Framework ReadMe Revisions Updates

Signed-off-by: Jennifer Gerhold <[email protected]>

* NeMo Framework ReadMe Revisions 2

Signed-off-by: Jennifer Gerhold <[email protected]>

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Signed-off-by: jgerh <[email protected]>
Signed-off-by: Eric Harper <[email protected]>
Signed-off-by: Jennifer Gerhold <[email protected]>
Co-authored-by: Eric Harper <[email protected]>