SPSR API store integration

Uses:

GuzzleHttp/6.2.1 - http://docs.guzzlephp.org/en/stable/overview.html#installation curl/7.51.0 PHP/5.6.29

1. Download all goods in store by PutItems
2. Add quantity for goods by PurchaseOrder
3. Add contractor for new order by PutContractors
4. Now orders can be sent to SPSR by SalesOrder
5. Check quantity of goods in store by StockReport

Use real:

$client = new SPSR\Client('login', 'password');
# $s = new SPSR\PutItems($fields);
# $s = new SPSR\PurchaseOrder($fields);
# $s = new SPSR\PutContractor($fields);
$s = new SPSR\SalesOrder($fields);
# $s = new SPSR\StockReport($fields);
$client->Execute($s->GetBody());

Use test:

$client = new SPSR\Client('', '', True);
# $s = new SPSR\PutItems($fields);
# $s = new SPSR\PurchaseOrder($fields);
# $s = new SPSR\PutContractor($fields);
$s = new SPSR\SalesOrder($fields);
# $s = new SPSR\StockReport($fields);
$client->Execute($s->GetBody());