update the README file to introduce the converter wizard CLI

[pyu10055]

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This change is 

[dsmilkov]

Reviewable status: 0 of 1 approvals obtained (waiting on @dsmilkov and @pyu10055)

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tfjs-converter/README.md, line 59 at r1 (raw file):

There are two way to trigger the model conversion:

- The conversion wizard: tensorflowjs_wizard

here, and the line below, wrap the command in quotes so it renders in <code>

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tfjs-converter/README.md, line 65 at r1 (raw file):

```bash
tensorflowjs_wizard

can you embed the animated gif here

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tfjs-converter/README.md, line 69 at r1 (raw file):

This tool will walk you through the conversion process and provide you with
details explanations for each choice you need to make. Behind the scene it calls
the converter script (`tensorflowjs_converter`) in pip package. This is the easier

s/easier/recommended/

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tfjs-converter/README.md, line 72 at r1 (raw file):

way to convert a single model.

There is also dry run mode for the wizard, which will not perform the actual

also a dry

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tfjs-converter/README.md, line 81 at r1 (raw file):

To convert a batch of models or integrate the conversion process into your own
script, you should look into using the tensorflowjs_converter script.

s/look into using/use/

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tfjs-converter/README.md, line 83 at r1 (raw file):

script, you should look into using the tensorflowjs_converter script.

Here is detail information of parameters of the converter script.

instead of this sentence, just add a sub-heading here "Conversion using flags"

[pyu10055]

updated the copy, PTAL, thanks.

Reviewable status: 0 of 1 approvals obtained

[dsmilkov]

Thanks Ping!

Reviewed 2 of 2 files at r2.
Reviewable status: complete! 1 of 1 approvals obtained

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tfjs-converter/README.md, line 59 at r1 (raw file):

Previously, dsmilkov (Daniel Smilkov) wrote…

here, and the line below, wrap the command in quotes so it renders in <code>

FYI, you can use single quotes "`" for inline parts