Merge pull request #18 from muskie9/bugfix/responseToStringConversion

BUGFIX GuzzleHttp\Psr7\Response cannot be converted to a string

Merge pull request #17 from sdrib/feature-more-useful-errors

Add more details for exceptions to beta

refactor(guzzle): upgrade to version 7.5

Update README.md

Update README.md

Adding support for PUT

Adding support for PUT

Updated to use Guzzle 6.2 with

kevinrob/guzzle-cache-middleware 2.0

Initial 1.0.0 public release for Packagist.