Update 3.0.md

external resource object added

Author: amrapalijz

versions/3.0.md

@@ -43,6 +43,7 @@ Additional utilities, such as testing tools, can also use the files.
 		- [Path Item Object](#pathItemObject)
 		- [Operation Object](#operationObject)
 		- [External Documentation Object](#externalDocumentationObject)
+		- [External Resource Object](#externalDocumentationObject)
 		- [Parameter Object](#parameterObject)
 		- [Request Body Object](#requestBodyObject)
 		- [Media Type Object](#mediaTypeObject)
@@ -201,6 +202,7 @@ Field Name | Type | Description
 <a name="oasSecurity"></a>security | [[Security Requirement Object](#securityRequirementObject)] | A declaration of which security mechanisms can be used across the API. The list of values includes alternative security requirement objects that can be used. Only one of the security requirement objects need to be satisfied to authorize a request. Individual operations can override this definition.
 <a name="oasTags"></a>tags | [[Tag Object](#tagObject)] | A list of tags used by the specification with additional metadata. The order of the tags can be used to reflect on their order by the parsing tools. Not all tags that are used by the [Operation Object](#operationObject) must be declared. The tags that are not declared MAY be organized randomly or based on the tools' logic. Each tag name in the list MUST be unique.
 <a name="oasExternalDocs"></a>externalDocs | [External Documentation Object](#externalDocumentationObject) | Additional external documentation.
+<a name="oasExternalResources"></a>externalResources | [External Resource Object](#externalResourceObject) | Additional external resources.
 
 This object can be extended with [Specification Extensions](#specificationExtensions). 
 
@@ -1006,14 +1008,6 @@ Field Name | Type | Description
 
 This object can be extended with [Specification Extensions](#specificationExtensions).
 
-##### smartAPI Fields
-
-Field Name | Type | Description
----|:---:|---
-<a name="externalDocType"></a>x-type | `enum` | **REQUIRED** values: `api documentation`, `website`,`developer forum`,`mailing list`,`social media`,`publication` </a>
-
-
- 
 
 ##### External Documentation Object Example
 
@@ -1028,12 +1022,30 @@ Field Name | Type | Description
 - description: Find more info here
   url: https://example.com
   type: website
-- x-type: api documentation
-  url: http://example.org/api/docs
-- x-type: publication
-  url: https://doi.org/10.1093/nar/gks1114
-- x-type: social media
-  url: http://twitter.com/mypetstore
+```
+
+#### <a name="externalResourceObject"></a>External Resource Object
+
+Allows referencing external resources for extended documentation.
+
+##### smartAPI Fields
+
+Field Name | Type | Description
+---|:---:|---
+<a name="externalResourceUrl"></a>x-url | `string` | **REQUIRED**. The URL for the target documentation. Value MUST be in the format of a URL.
+<a name="externalResourceType"></a>x-type | `enum` | **REQUIRED** values: `api documentation`, `website`,`developer forum`,`mailing list`,`social media`,`publication` </a>
+<a name="externalResourceDescription"></a>x-description | `string` | A short description of the target documentation. [CommonMark syntax](http://spec.commonmark.org/) can be used for rich text representation.
+
+##### External Resource Object Example
+
+```yaml
+- x-url: http://example.org/api/docs
+  x-type: api documentation
+- x-url: https://doi.org/10.1093/nar/gks1114
+  x-type: publication
+  x-description: "BioGPS and MyGene.info: organizing online, gene-centric information"
+- x-url: http://twitter.com/mygeneinfo
+  x-type: social media
 ```
 
 #### <a name="parameterObject"></a>Parameter Object