Default Accept header to JSON

[tony-gutierrez]

It would probably be nice to add a default header:

Accept: 'application/json, text/json'

so that you will almost always get JSON back.

[tanmaiaccion]

+1 for this request

[tanmaiaccion]

@tony-gutierrez check this workaround, it works.
#312 (comment)

[sunnysmane]

Yes, it will be good if content type option is available in GET method as it is available in PUT and POST method.

Thanks @tanmaiaccion for the work around. It worked.