Spec updates (#41)

* Updated the service level to ‘bronze’

* Added an ‘Attribution’ section toi the spec

* Removed the attribution PNG image

Author: adrianparr

specification/nhs-website-content-api.yaml

@@ -22,14 +22,37 @@ info:
       * get Ratings and Reviews of NHS services.
 
     ## Who can use this API
-    Anyone can use this API for any purpose, so long as they include an attribution as per our [terms and conditions](https://developer.api.nhs.uk/about/terms).
+    Anyone can use this API for any purpose, so long as they include an [attribution](#overview--attribution) as outlined below.
+
+    ## Attribution
+    Any syndicated content must incorporate the following attribution (credit) to the NHS website:
+
+    <img src="https://www.nhs.uk/nhscwebservices/documents/logo1.jpg" alt="Content supplied by the NHS website" width="875" height="177" style="width: 250px; height: 49px;" />
+
+    The logo should be clearly visible and in line with the associated content on every web page that contains the syndicated content. You should also link this logo to the relevant page on the NHS website that the content has been supplied from. This URL is supplied as part of the feed under author:
+
+    ```
+    "author": {
+      "url": "https://www.nhs.uk",
+      "logo": "https://www.nhs.uk/nhscwebservices/documents/logo1.jpg",
+      "email": "nhswebsite.servicedesk@nhs.net",
+      "@type": "Organization",
+      "name": "NHS website"
+    }
+    ```
+
+    If you are displaying NHS syndicated content in a context where a functional link back to the article on the NHS website is not possible then you should use the following attribution (credit):
+
+    ```
+    <p>From <a href="https://www.nhs.uk/" target="_blank">www.nhs.uk<a/></p>
+    ```
 
     ## API status
     This API has moved from the [NHS website developer portal](https://developer.api.nhs.uk/). 
     It is currently [in development](https://digital.nhs.uk/developer/guides-and-documentation/reference-guide#statuses).
 
     ## Service level
-    This API is a [gold service](https://digital.nhs.uk/developer/guides-and-documentation/reference-guide#service-levels), meaning that it is operational and supported 24 hours a day, 365 days a year.
+    This API is a [bronze service](https://digital.nhs.uk/developer/guides-and-documentation/reference-guide#service-levels).
 
     ## Technology
     This API is [RESTful](https://digital.nhs.uk/developer/guides-and-documentation/our-api-technologies#basic-rest).