dk-handle_data_raw

[dkuku]

Hey @derekkraan
I often copy curl requests from the browser.
In my case the data is always under the key data-raw which does the same as --data but does not support @ which is reading from file or stdin which is not supported currently in curl_req so I think all should be handled identical.

From the docs:

--data-ascii
(HTTP) This option is just an alias for -d, --data.

--data-raw
(HTTP) Post data similarly to -d, --data but without the special interpretation of the @ character.

Another thing I spotted that some requests have dollar sign in the beginning - this is handled by the shell and has to be stripped

[derekkraan]

Thanks for the PR! Will do a release so people can start using this right away.