GitLab

Added a link to the model-garden guide that was published on TF webpage

Update 'nlp model building` broken link

* * Update README.md

Added installation approach for Windows.

* Update README.md

Updated line 91 from 
`pip3 install --user -r official/requirements.txt`

to 
`pip3 install --user -r models/official/requirements.txt`

* Update README.md
Update line 78 from
$env:PYTHONPATH += "C:\path\to\models"

to
$env:PYTHONPATH += ":\path\to\models"
Co-authored-by: Vishnuvardhan Janapati <46058173+jvishnuvardhan@users.noreply.github.com>

* Updated readme as tensorflow-text gets installated

Updated readme as tensorflow-text gets installated automatically by pip

* Update README.md

Fix typo

Update readme with pypi package for tf-models-official instead of tf

Formatted `BibTex` for correct citation.