Merge pull request #79 from radiantearth/item-search-post

Item search POST clarification

README.md

@@ -39,7 +39,7 @@ the specification takes place in the [issue tracker](https://github.com/radiante
 
 ## In this repository
 
-The **[Overview](OVERVIEW.md)** document describes all the various parts of the STAC API and how they fit together.
+The **[Overview](overview.md)** document describes all the various parts of the STAC API and how they fit together.
 
 **STAC API - Core Specification:**
 The main description of the core STAC API specification is in the *[core](core/)* folder and

item-search/README.md

@@ -16,7 +16,7 @@ Implementing `GET /search` is **required**, `POST /search` is optional, but reco
 
 It is **required** to add a Link to the root endpoint (`/`) with the `rel` type set to `search`
 that refers to the search endpoint in the `href` property,
-with a `type` of `application/geo+json` and a `method` of either `GET` or `POST`.
+with a `type` of `application/geo+json` and a `method` of `GET`.
 This link should look like:
 
 ```json
@@ -29,6 +29,8 @@ This link should look like:
 }
 ```
 
+Implementations that support `POST` must add a second link with the same structure, but has a `method` of `POST`. 
+
 ## Query Parameters and Fields
 
 The following list of parameters is used to narrow search queries. They can all be represented as query string parameters