* verify response body with expected keywords
* remove debug log
* add extra test case
* migrate from ioutil to io
* close body and only check for one keyword
* cleanup
* init
* look for client id and client secret, encode them for basis auth
* add tests
* test without checking the contents of response
* confirm access_token exists
* cleanup test
* explain in code that an undocumented grant_type is used
* remove use of deprecated ioutil, remove dead code, return errors instead of just logging
* directly pull access token
* update error text, remove redundant body close()
* import new detector into defaults
Zubair Khan