[Update documentation] ra-data-simple-rest dialect sends Valid JSON in URL params

[eightyfive]

You should update the documentation of ra-data-simple-rest dialect to reflect that the library does indeed send valid JSON in URL params.

Example:

GET http://my.api.url/posts?sort=['title','ASC']&range=[0, 24]&filter={title:'bar'}

Needs to be:

GET http://my.api.url/posts?sort=["title","ASC"]&range=[0, 24]&filter={"title":"bar"}

Thanks a lot for the library.

[fzaninotto]

Thanks for reporting this!