Added basic documentation for select widget

[ackushiw]

- Summary
This helps people new to the platform with using the select widget and removes the need to go digging through code to work out the implementation.

- Test plan
Used english dictionary

- Description for the changelog
closes #764

Added basic documentation for select widget

- A picture of a cute animal (not mandatory but encouraged)

[verythorough]

Awesome. This also gets us one step closer to fully addressing #619. Thanks!
Could you add yourself to the contributor list? (Instructions here - we can also do the adding for you, if you prefer.)

[erquhart]

Thanks @ackushiw! Say, I noticed this doesn't quite close #764, so I've added a couple of requests to that end.

[erquhart]

Closing #764 requires documentation of adding labels and values, would you mind adding an example of that, too? You could even trim this code sample down and just show the field config examples, e.g.:

collections:
  - name: posts
     ...
     fields:
       ...
       - { label: Align Content, <rest of field> }
       - { label: Other example, <rest of field> }

[tech4him1]

@ackushiw I think it would also be nice if we note that you can use the default setting, to set the default option.

[ackushiw]

Yeah, I tried this in my own project but it didn't work. I assumed this will be added in the next release, so didn't want to jump the gun. Let me double check though.

…

On Nov 11, 2017 9:24 PM, "Caleb" ***@***.***> wrote: @ackushiw <https://github.com/ackushiw> I think it would also be nice if we note that you can use the default setting, to set the default option. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#806 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AF6kbI9-Tpk5vfxB-CPu3PjgHnVnOdr1ks5s1lbbgaJpZM4QanA9> .

[verythorough]

I'm going to merge this as an incremental improvement and keep #764 open for now.