Improvements (#6)

* Add external dependencies to manifest to avoid error on module activation; add requirements.txt.
* Readme 
* Fix errors, restructure settings form, update installation steps, streamline overall.
* Change version

payment_btcpay/__manifest__.py

@@ -21,25 +21,25 @@
 
 {
     'name': 'Payment Provider: BTCPay',
-
     'summary': 'This module integrates BTCPAY - pay with Bitcoin - with Odoo v16.0',
     'author': 'Vandekul',
     'website': 'https://github.com/btcpayserver/odoo',
     'category': 'Accounting/Payment Providers',
-    'version': '16.0',
+    'version': '16.0.0',
     'license': 'GPL-3',
-    'price':'100',
     'application': False,
     'installable': True,
     'auto_install': False,
-    'depends': ['base', 'payment'],
+    'depends': ['base', 'account', 'payment'],
     'data': [
         'views/payment_btcpay_templates.xml',
         'views/payment_provider_views.xml',
         'views/payment_transaction_views.xml',
         'data/payment_provider_data.xml',
     ],
-
+    'external_dependencies': {
+        'python': ['btcpay-python']
+    },
     'post_init_hook': 'post_init_hook',
     'uninstall_hook': 'uninstall_hook',
 }