Updated mapping_definitions.sh for ES6

[jeonghanlee]

Hi Kunal,

Here are three changes for this script as follows

• added -H 'Content-Type: application/json' in curl command in order to remove the following error:

  "error":"Content-Type header [application/x-www-form-urlencoded] is not supported","status":406

• replaced string with text with the full searchable text, because the string type was removed since ES 5.

• added the little cosmetic print command to distinguish the output of curl in a terminal.

Please let me know what you think.

[jeonghanlee]

I closed it now, will contact you through the email.