zwischenversion
first steps implementing sphereClient
first steps sphereclient
more done for sphereclient
Merge branch 'master' of https://github.com/sphereio/sphere-php-sdk

Conflicts:
	io/sphere/client/oauth/SphereClientCredentials.php
	io/sphere/client/shop/ProductService.php
	io/sphere/client/shop/SphereClientConfig.php
	io/sphere/internal/ProductServiceImpl.php
	io/sphere/internal/util/Locale.php