Added PayPal requriement

[pivulic]

Problem

During our deployment process, where the database is created, it crashes in https://github.com/Adyen/adyen-magento2/blob/1.1.1/Setup/UpgradeSchema.php#L90 due to:

Module 'Adyen_Payment':
Installing schema.. Upgrading schema.. 

  [Zend_Db_Statement_Exception]                                                                                                                                  
  SQLSTATE[42S02]: Base table or view not found: 1146 Table 'project_m2.paypal_billing_agreement' doesn't exist, query was: DESCRIBE `paypal_billing_agreement`  

  [PDOException]                                                                                                 
  SQLSTATE[42S02]: Base table or view not found: 1146 Table 'project_m2.paypal_billing_agreement' doesn't exist

Expected Result

1. Adyen should depend on PayPal to be installed.
2. A new version in https://packagist.org/packages/adyen/module-payment

[rikterbeek]

Hi Pablo,

Thanks, yes that is correct. I will merge your pull request.

Regards,
Rik
Adyen

[rikterbeek]

Hi Pablo,

Will be in the next release of the module somewhere next week. For now you could use the develop branch or fist install magento2 without adyen module install and do it afterwards.

Regards,
Rik
Adyen

[pivulic]

Thanks Rik, we'll use the develop branch meanwhile.