Update the term Link with Product in the README related to links

OLD_API.md

@@ -22,13 +22,13 @@ $ php composer.phar require instamojo/instamojo-php
 $api = new Instamojo\Instamojo(API_KEY, AUTH_TOKEN);
 ```
 
-### Create a Link
+### Create a product
 
 ```php
 try {
     $response = $api->linkCreate(array(
         'title'=>'Hello API',
-        'description'=>'Create a new Link easily',
+        'description'=>'Create a new product easily',
         'base_price'=>100,
         'cover_image'=>'/path/to/photo.jpg'
         ));
@@ -39,14 +39,14 @@ catch (Exception $e) {
 }
 ```
 
-This will give you JSON object containing details of the Link that was just created.
+This will give you JSON object containing details of the product that was just created.
 
-### Edit a Link
+### Edit a product
 
 ```php
 try {
     $response = $api->linkEdit(
-        'hello-api', // You must specify the slug of the Link
+        'hello-api', // You must specify the slug of the product
         array(
         'title'=>'A New Title',
         ));
@@ -57,7 +57,7 @@ catch (Exception $e) {
 }
 ```
 
-### List all Links
+### List all products
 
 ```php
 try {
@@ -97,28 +97,28 @@ catch (Exception $e) {
 
 You have these functions to interact with the API:
 
-  * `linksList()` List all Links created by authenticated User.
-  * `linkDetail($slug)` Get details of Link specified by its unique slug.
-  * `linkCreate(array $link)` Create a new Link.
-  * `linkEdit($slug, array $link)` Edit an existing Link.
-  * `linkDelete($slug)` Archvive a Link - Archived Links cannot be generally accessed by the API. User can still view them on the Dashboard at instamojo.com.
+  * `linksList()` List all products created by authenticated User.
+  * `linkDetail($slug)` Get details of product specified by its unique slug.
+  * `linkCreate(array $link)` Create a new product.
+  * `linkEdit($slug, array $link)` Edit an existing product.
+  * `linkDelete($slug)` Archive a product - Archived producrs cannot be generally accessed by the API. User can still view them on the Dashboard at instamojo.com.
   *  `paymentsList()` List all Payments linked to User's account.
   * `paymentDetail($payment_id)` Get details of a Payment specified by its unique Payment ID. You may receive the Payment ID via `paymentsList()` or via URL Redirect function or as a part of Webhook data.
 
-## Link Creation Parameters
+## Product Creation Parameters
 
 ### Required
 
-  * `title` - Title of the Link, be concise.
+  * `title` - Title of the product, be concise.
   * `description` - Describe what your customers will get, you can add terms and conditions and any other relevant information here. Markdown is supported, popular media URLs like Youtube, Flickr are auto-embedded.
-  * `base_price` - Price of the Link. This may be 0, if you want to offer it for free. 
+  * `base_price` - Price of the product. This may be 0, if you want to offer it for free. 
 
 ### File and Cover Image
   * `file_upload` - Full path to the file you want to sell. This file will be available only after successful payment.
   * `cover_image` - Full path to the IMAGE you want to upload as a cover image.
 
 ### Quantity
-  * `quantity` - Set to 0 for unlimited sales. If you set it to say 10, a total of 10 sales will be allowed after which the Link will be made unavailable.
+  * `quantity` - Set to 0 for unlimited sales. If you set it to say 10, a total of 10 sales will be allowed after which the product will be made unavailable.
 
 ### Post Purchase Note
   * `note` - A post-purchase note, will only displayed after successful payment. Will also be included in the ticket/ receipt that is sent as attachment to the email sent to buyer. This will not be shown if the payment fails.