[Tika Wiki] Update of "TikaAndVision" by KranthiGV

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The "TikaAndVision" page has been changed by KranthiGV:
https://wiki.apache.org/tika/TikaAndVision?action=diff&rev1=6&rev2=7

Comment:
Documented tensorflow/models 

  To install tensorflow, follow the instructions on [[https://www.tensorflow.org/install/|the official site here]] for your environment.
  Unless you know what you are doing, you are recommended to follow pip installation. 
  
+ Then clone the repository [[https://github.com/tensorflow/models|tensorflow/models]] or download the [[https://github.com/tensorflow/models/archive/master.zip|zip file]].
+   {{{git clone https://github.com/tensorflow/models.git}}}
+ 
+ Add 'models/slim' folder to the environment variable, PYTHONPATH.
+ 
+    {{{PYTHONPATH="$PYTHONPATH:/path/to/models/slim"}}}
+ 
  To test the readiness of your environment :
  
-   {{{$ python -c 'import tensorflow, numpy; print("OK")'}}}
+   {{{$ python -c 'import tensorflow, numpy, datasets; print("OK")'}}}
  
  If the above command prints the message "OK", then the requirements are satisfied.