Added readme for invoice and cards

documents/card.md

@@ -0,0 +1,19 @@
+## Cards
+
+### Fetch card
+
+```php
+$api->card->fetch($cardId);
+```
+
+**Parameters:**
+
+| Name            | Type    | Description                                                                  |
+|-----------------|---------|------------------------------------------------------------------------------|
+| cardId*          | string | card id to be fetched                                               |
+
+-------------------------------------------------------------------------------------------------------
+
+**PN: * indicates mandatory fields**
+<br>
+<br>

documents/invoice.md

@@ -0,0 +1,127 @@
+## Invoices
+
+### Create Invoice
+
+Request #1
+In this example, an invoice is created using the customer and item details. Here, the customer and item are created while creating the invoice.
+```php
+$api->order->create(array ('type' => 'invoice','description' => 'Invoice for the month of January 2020','partial_payment' => true,'customer' =>array ('name' => 'Gaurav Kumar','contact' => 9999999999,'email' => 'gaurav.kumar@example.com','billing_address' => array ('line1' => 'Ground & 1st Floor, SJR Cyber Laskar','line2' => 'Hosur Road','zipcode' => '560068','city' => 'Bengaluru','state' => 'Karnataka','country' => 'in'),'shipping_address' => array ('line1' => 'Ground & 1st Floor, SJR Cyber Laskar','line2' => 'Hosur Road','zipcode' => '560068','city' => 'Bengaluru','state' => 'Karnataka','country' => 'in')),'line_items' => array (array ('name' => 'Master Cloud Computing in 30 Days','description' => 'Book by Ravena Ravenclaw','amount' => 399,'currency' => 'USD','quantity' => 1)),'sms_notify' => 1,'email_notify' => 1,'currency' => 'USD','expire_by' => 1589765167));
+```
+
+Request #2
+In this example, an invoice is created using existing `customer_id` and `item_id`
+```php
+$api->invoice->create(array ('type' => 'invoice','date' => 1589994898, 'customer_id'=> 'cust_E7q0trFqXgExmT', 'line_items'=>array(array('item_id'=>'item_DRt61i2NnL8oy6'))));
+```
+
+**Parameters:**
+
+| Name            | Type    | Description                                                                  |
+|-----------------|---------|------------------------------------------------------------------------------|
+|type*          | string | entity type (here its invoice)                                               |
+|description        | string  | A brief description of the invoice.                      |
+|customer_id           | string  | customer id for which invoice need be raised                     |
+|customer           | array  | customer details in a array format                     |
+
+-------------------------------------------------------------------------------------------------------
+
+### Fetch invoices
+
+```php
+$api->invoice->all();
+```
+
+**Parameters:**
+
+| Name            | Type    | Description                                                                  |
+|-----------------|---------|------------------------------------------------------------------------------|
+|type          | string | entity type (here its invoice)                                               |
+|payment_id        | string  | The unique identifier of the payment made by the customer against the invoice.                      |
+|customer_id           | string  | The unique identifier of the customer.                     |
+|receipt           | string  |  The unique receipt number that you entered for internal purposes.                     |
+
+-------------------------------------------------------------------------------------------------------
+
+### Fetch invoice
+
+```php
+$api->invoice->fetch($invoiceId);
+```
+
+**Parameters:**
+
+| Name            | Type    | Description                                                                  |
+|-----------------|---------|------------------------------------------------------------------------------|
+| invoiceId*          | string | The id of the invoice to be fetched                         |
+-------------------------------------------------------------------------------------------------------
+
+### Update invoice
+
+```php
+$api->invoice->fetch($invoiceId)->edit(array('line_items' => array(array('id' => 'li_DAweOizsysoJU6','name' => 'Book / English August - Updated name and quantity','quantity' => 1),array('name' => 'Book / A Wild Sheep Chase','amount' => 200,'currency' => 'INR','quantity' => 1)),'notes' => array('updated-key' => 'An updated note.')));
+```
+
+**Parameters:**
+
+| Name            | Type    | Description                                                                  |
+|-----------------|---------|------------------------------------------------------------------------------|
+| invoiceId*          | string | The id of the invoice to be fetched                         |
+-------------------------------------------------------------------------------------------------------
+
+### Issues an invoice
+
+```php
+$api->invoice->fetch($invoiceId)->issue();
+```
+
+**Parameters:**
+
+| Name            | Type    | Description                                                                  |
+|-----------------|---------|------------------------------------------------------------------------------|
+| invoiceId*          | string | The id of the invoice to be issued                         |
+-------------------------------------------------------------------------------------------------------
+
+### Delete an invoice
+
+```php
+$api->invoice->fetch($invoiceId)->delete();
+```
+
+**Parameters:**
+
+| Name            | Type    | Description                                                                  |
+|-----------------|---------|------------------------------------------------------------------------------|
+| invoiceId*          | string | The id of the invoice to be deleted                         |
+-------------------------------------------------------------------------------------------------------
+
+### Cancel an invoice
+
+```php
+$api->invoice->fetch($invoiceId)->cancel();
+```
+
+**Parameters:**
+
+| Name            | Type    | Description                                                                  |
+|-----------------|---------|------------------------------------------------------------------------------|
+| invoiceId*          | string | The id of the invoice to be cancelled                         |
+-------------------------------------------------------------------------------------------------------
+
+### Send notification
+
+```php
+$api->invoice->fetch($invoiceId)->notify($medium);
+```
+
+**Parameters:**
+
+| Name            | Type    | Description                                                                  |
+|-----------------|---------|------------------------------------------------------------------------------|
+| invoiceId*          | string | The id of the invoice to be notified                         |
+| medium*          | string | `sms`/`email`, Medium through which notification should be sent.                         |
+-------------------------------------------------------------------------------------------------------
+
+**PN: * indicates mandatory fields**
+<br>
+<br>
+**For reference click [here](https://razorpay.com/docs/api/invoices)**

documents/order.md

@@ -44,7 +44,7 @@ $api->order->fetch($orderId);
 
 | Name     | Type   | Description                         |
 |----------|--------|-------------------------------------|
-| orderId* | string | The id of the order to be retrieved |
+| orderId* | string | The id of the order to be fetched |
 
 -------------------------------------------------------------------------------------------------------
 

documents/settlement.md

@@ -44,6 +44,7 @@ $api->settlement->reports(array("year"=>2020,"month"=>09));
 |---------------|-------------|---------------------------------------------|
 | year* | integer      | The year the settlement was received in the `YYYY` format. For example, `2020`   |
 | month* | integer      | The month the settlement was received in the `MM` format. For example, `09`   |
+| day | integer      | The date the settlement was received in the `DD` format. For example, `01`   |
 | count | integer   | number of settlements to fetch (default: 10)        |
 | skip  | integer   | number of settlements to be skipped (default: 0)    |